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Aon Reports Fourth Quarter and Full Year 2007 Results
- Revenue increased 8% to $2.0 billion -
- EPS from Continuing Operations increased 37% to $0.59 -
Fourth Quarter 2007 Highlights
EPS from continuing operations, excluding certain items, increased 17% to $0.69
- Risk and Insurance Brokerage Services pretax margin was 17.0% and the adjusted pretax margin, excluding certain items, increased 100 basis points to 18.5%
- Consulting pretax margin was 16.1% and the adjusted pretax margin, excluding certain items, increased 180 basis points to 17.2%
- Announced definitive agreements to sell Combined Insurance Company of America for $2.4 billion and Sterling Life Insurance for $352 million
- Increased existing authorized share repurchase program by $2.6 billion

CHICAGO, Feb. 7 /PRNewswire-FirstCall/ -- Aon Corporation (NYSE:AOC) today reported results for the fourth quarter and full year ended December 31, 2007.

Net income decreased 7% to $207 million or $0.64 per share, compared to $223 million or $0.67 per share for the prior year quarter. Net income from continuing operations increased 33% to $190 million or $0.59 per share, compared to $143 million or $0.43 per share for the prior year quarter. Certain items that impacted fourth quarter results and comparisons with the prior year quarter are detailed in the reconciliations of non-GAAP measures on pages 11 and 12 of this press release. Net income from continuing operations per share, excluding certain items, increased 17% to $0.69 compared to $0.59 for the prior year quarter.

"We are pleased with our solid fourth quarter results, which reflect the strength of our industry-leading network of global resources and capabilities and continued progress in each of our key operating metrics. Organic revenue growth was two percent in our brokerage segment and three percent in consulting services, adjusted pretax margin increased 110 basis points, and adjusted earnings per share from continuing operations increased 17 percent," said Greg Case, president and chief executive officer, Aon Corporation.

"Our fourth quarter and 2007 results are fully on schedule with the second year of our three-year improvement plan. Our expense initiatives and restructuring programs are delivering meaningful margin improvement while funding investments in value-added services and capabilities for our clients. We increased our focus on core assets with the announced sale of our lower-margin, more capital-intensive insurance underwriting businesses. Our balance sheet is strong, which provides financial flexibility, and we increased our authorized share repurchase program by $2.6 billion. All these actions support our belief in the underlying strength of Aon and our ongoing commitment to long-term shareholder value creation."

FOURTH QUARTER FINANCIAL SUMMARY

Total revenue increased 8% to $2.0 billion with organic revenue growth of 1%. Total expenses increased 4% or $73 million to $1.8 billion, including a $92 million unfavorable impact from foreign currency translation.

Pension expense related to the Company's major defined benefit pension plans declined to $15 million in the fourth quarter compared to $54 million in the prior year quarter. Pension expense declined to $80 million in 2007 compared to $233 million in 2006 due primarily to plan amendments made in the Company's major defined benefit pension plans. The Company currently anticipates that 2008 pension expense will be similar to 2007.

Restructuring expense was $34 million in the fourth quarter compared to $78 million in the prior year quarter. An analysis of restructuring related expenses by segment and type for the 2005 and 2007 restructuring programs is detailed on page 13 of this release.

Restructuring savings realized in the fourth quarter are estimated at $64 million compared to $37 million in the prior year quarter. Of the estimated restructuring savings in the fourth quarter, $54 million were related to the Brokerage segment, primarily for workforce reduction. The 2005 restructuring program resulted in cumulative cost savings of approximately $225 million in 2007 and is on track to achieve $270 million of cumulative cost savings in 2008. Cumulative cost savings estimates do not include any benefits related to businesses placed into discontinued operations.

The 2007 restructuring program, before any potential reinvestment of savings, is expected to result in cumulative cost savings of approximately $50-70 million in 2008, $175-200 million in 2009 and $240 million in 2010, consistent with previous estimates.

Foreign currency translation increased net income by $0.04 per share compared to the prior year quarter.

Effective tax rate on continuing operations was 30.4% for the fourth quarter compared to 26.7% for the prior year quarter. Both quarters were impacted by the resolution of certain items, non-recurring tax adjustments and tax credits. The Company currently anticipates that the effective tax rate on continuing operations will be 33.0% for 2008.

Diluted average shares outstanding declined to 324 million in the fourth quarter compared to 334 million in the prior year quarter, due primarily to the Company's share repurchase program. During the fourth quarter, the Company repurchased 544,700 shares of common stock for $26 million, at an average price of $47.29 per share.

Discontinued Operations after-tax income was $17 million or $0.05 per share compared to $80 million or $0.24 per share for the prior year quarter. Discontinued operations include the results of Combined Insurance Company of America (CICA) and Sterling Life Insurance (Sterling), as well as the results and dispositions of Aon Warranty Group (AWG) and Construction Program Group (CPG), which were sold in the fourth quarter 2006. CICA's fourth quarter 2007 results include a $28 million non-recurring tax adjustment related to the recognition of deferred taxes of foreign subsidiaries.

FOURTH QUARTER SEGMENT REVIEW

Certain noteworthy items impacted revenue, pretax income and pretax margins in the fourth quarter of 2007 and 2006. The fourth quarter segment reviews provided below include supplemental information related to adjusted pretax income and pretax margin which is described in detail on the "Reconciliation of Non-GAAP Measures - Segments" on page 12 of this press release.

RISK AND INSURANCE BROKERAGE SERVICES

  (millions)    Fourth Quarter Ended                Less:
                --------------------     Less:   Acquisitions, Less: Organic
                 Dec 31,  Dec 31,   %   Currency Divestitures, All   Revenue
  Revenue         2007     2006  Change Impact   Transfers    Other  Growth
  -------       -------- ------- ------ -------- ------------ ------ ------
  Americas        $686     $654     5%     2%        -%         -%      3%
  U.K.             234      206    14     10         1          4      (1)
  EMEA             359      291    23     12         2          4       5
  Asia Pacific     145      147    (1)    11        (2)        (5)     (5)
  Reinsurance      227      224     1      1         1         (4)      3
                -------- ------- ------ -------- ------------ ------ ------
  Total         $1,651   $1,522     8%     6%        1%        (1)%     2%
                ======== ======= ====== ======== ============ ====== ======

Risk and Insurance Brokerage Services revenue increased 8% compared to the prior year quarter with organic revenue growth of 2%. Americas organic revenue increased 3% primarily reflecting strong growth in Latin America and Affinity. U.K. organic revenue declined 1% due primarily to soft market conditions. EMEA organic revenue increased 5% due to solid growth in continental Europe and strong growth in emerging markets. Asia Pacific organic revenue decreased 5% reflecting soft market conditions in Australia and the impact of certain regulatory changes in Japan, partially offset by solid growth in most other Asian markets. Reinsurance organic revenue increased 3% due primarily to growth in global facultative placements and capital markets transactions, partially offset by soft market conditions and higher cedant retentions.

Fourth Quarter Ended
                                   -----------------------
  (millions)                        Dec 31,         Dec 31,            %
                                     2007            2006           Change
                                   -------         -------          ------
  Revenue                          $1,651          $1,522              8%
  Expenses
    Compensation and benefits         932             927              1
    Other expenses                    438             399             10
                                   -------         -------          ------
      Total expenses                1,370           1,326              3
                                   -------         -------          ------

  Pretax income                      $281            $196             43%
                                   =======         =======          ======
  Pretax margin                      17.0%           12.9%

  Pretax income - adjusted           $305            $266             15%
  Pretax margin - adjusted           18.5%           17.5%

Compensation and benefits for the fourth quarter were essentially unchanged from the prior year quarter as a $55 million unfavorable impact from foreign currency translation was offset by lower restructuring costs and benefits related to the 2005 restructuring program.

Other expenses increased $39 million or 10% compared to the prior year quarter including a $14 million unfavorable impact from foreign currency translation and higher restructuring costs, partially offset by benefits related to the 2005 restructuring program.

Fourth quarter pretax income increased 43% to $281 million. Adjusting for certain items detailed on page 12 of this press release, pretax income increased 15% to $305 million and pretax margin increased 100 basis points to 18.5% versus the prior year quarter.

CONSULTING

  (millions)    Fourth Quarter Ended                Less:
                --------------------     Less:   Acquisitions, Less: Organic
                 Dec 31,  Dec 31,   %   Currency Divestitures, All   Revenue
  Revenue         2007     2006  Change Impact   Transfers    Other  Growth
  -------       -------- ------- ------ -------- ------------ ------ ------
  Services       $314      $280    12%     5%         2%        2%      3%
  Outsourcing      59        84   (30)     3         (1)        -     (32)
                -------- ------- ------ -------- ------------ ------ ------
  Total          $373      $364     2%     5%         2%        -%     (5)%
                ======== ======= ====== ======== ============ ====== ======

Consulting revenue increased 2% to $373 million compared to the prior year quarter. Organic revenue in Consulting Services increased 3% due primarily to growth in compensation and health and benefits consulting. Organic revenue in Outsourcing decreased 32% due primarily to the previously announced termination of a significant outsourcing contract.

Fourth Quarter Ended
                                    ----------------------
  (millions)                        Dec 31,         Dec 31,           %
                                     2007            2006          Change
                                    ------          ------         ------
  Revenue                            $373            $364             2%
  Expenses
    Compensation and benefits         219             217             1
    Other expenses                     94              98            (4)
                                    ------          ------         ------
      Total expenses                  313             315            (1)
                                    ------          ------         ------

  Pretax income                       $60             $49            22%
                                    ======          ======         ======
  Pretax margin                      16.1%           13.5%

  Pretax income - adjusted            $64             $56            14%
  Pretax margin - adjusted           17.2%           15.4%

Total expenses were relatively unchanged versus the prior year quarter due primarily to lower restructuring charges, benefits related to the 2005 restructuring program and other operational improvements, partially offset by a $14 million unfavorable impact from foreign currency translation.

Fourth quarter pretax income increased 22% to $60 million and the pretax margin increased 260 basis points to 16.1% versus the prior year quarter. Adjusting for certain items detailed on page 12, pretax income increased 14% to $64 million and the pretax margin increased 180 basis points to 17.2%.

UNALLOCATED INCOME AND EXPENSE

                                     Fourth Quarter Ended
                                    ----------------------
  (millions)                        Dec 31,         Dec 31,           %
                                     2007            2006          Change
                                    ------          ------         ------
  Operating segment income
   before tax                        $341            $245             39%
  Property & Casualty operations       (4)             (3)            33
  Unallocated investment income        11              10             10
  Unallocated expenses                (39)            (27)            44
  Interest expense                    (36)            (30)            20
                                    ------          ------         ------
  Income from continuing operations
   before tax                        $273            $195             40%
                                    ======          ======         ======

Property & Casualty loss was $4 million compared to a loss of $3 million in the prior year quarter. All property & casualty business was placed into run-off in the fourth quarter 2006.

Unallocated investment income for the fourth quarter increased $1 million to $11 million compared to the prior year quarter. Unallocated expenses increased $12 million to $39 million versus the prior year quarter including the resolution of a $15 million non-cash balance sheet reconciliation difference in the U.K. Interest expense increased $6 million to $36 million versus the prior year quarter due primarily to a higher percentage of borrowings in foreign currencies and higher interest rates.

2007 FINANCIAL SUMMARY

Total revenue for 2007 increased 9% to $7.5 billion with organic revenue growth of 2%. Risk and Insurance Brokerage Services revenue increased 8% to $6.1 billion with organic revenue growth of 3%. Consulting revenue increased 5% to $1.4 billion with a decrease in organic revenue of 1%.

Net income for 2007 was $864 million or $2.69 per share, compared to $720 million or $2.13 per share for the prior year. Net income from continuing operations increased 50% to $672 million or $2.10 per share, compared to $447 million or $1.33 per share for the prior year. Certain items that impacted full year results and comparisons against the prior year are detailed in the reconciliations of the impact of non-GAAP measures on pages 11 and 12. Net income from continuing operations, excluding certain items, increased 43% to $2.37 per share compared to $1.66 per share for the prior year.

During 2007, the Company repurchased approximately 19.1 million shares of common stock for $751 million at an average price of $39.30 per share. As of December 31, 2007, the Company had approximately $2.8 billion of remaining share repurchase authorization, which includes the $2.6 billion authorized increase announced during the fourth quarter 2007.

Conference Call and Webcast Details

The Company will host a conference call on Friday, February 8, 2008 at 10:00 a.m. central time. Interested parties can listen to the conference call via a live audio webcast at http://www.aon.com/.

About Aon

Aon Corporation (NYSE:AOC) is the leading global provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting. Through its 43,000 professionals worldwide, Aon readily delivers distinctive client value via innovative and effective risk management and workforce productivity solutions. Our industry-leading global resources, technical expertise and industry knowledge are delivered locally through more than 500 offices in more than 120 countries. Aon was ranked by A.M. Best as the number one global insurance brokerage in 2007 based on brokerage revenues, and voted best insurance intermediary, best reinsurance intermediary, and best employee benefits consulting firm in 2007 by the readers of Business Insurance. For more information on Aon, log onto http://www.aon.com/.

Safe Harbor Statement

This press release contains certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors that could impact results include: general economic conditions in different countries in which we do business around the world, changes in global equity and fixed income markets that could affect the return on invested assets, fluctuations in exchange and interest rates that could influence revenue and expense, rating agency actions that could affect our ability to borrow funds, funding of our various pension plans, changes in the competitive environment, our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, our ability to successfully close the sales of our Combined Insurance and Sterling Life Insurance businesses, the impact of current, pending and future regulatory and legislative actions that affect our ability to market and sell, and be reimbursed at current levels for, our Sterling subsidiary's Medicare Advantage health plans, changes in commercial property and casualty markets and commercial premium rates that could impact revenues, changes in revenues and earnings due to the elimination of contingent commissions, other uncertainties surrounding a new compensation model, the impact of investigations brought by U.S. state attorneys general, U.S. state insurance regulators, U.S. federal prosecutors, U.S. federal regulators, and regulatory authorities in the U.K. and other countries, the impact of class actions and individual lawsuits including client class actions, securities class actions, derivative actions, ERISA class actions, the impact of the analysis of practices relating to stock options, the cost of resolution of other contingent liabilities and loss contingencies, and the difference in ultimate paid claims in our underwriting companies from actuarial estimates. Further information concerning the Company and its business, including factors that potentially could materially affect the Company's financial results, is contained in the Company's filings with the Securities and Exchange Commission.

Investor Contact:
   Scott Malchow
   Vice President, Investor Relations
   312-381-3983

   Media Contact:
   David Prosperi
   Vice President, Global Public Relations
   312-381-2485


  Aon Corporation
  Consolidated Summary of Operations

                            Fourth Quarter Ended     Twelve Months Ended
                         ------------------------- -------------------------
  (millions except per   Dec. 31, Dec. 31, Percent Dec. 31, Dec. 31, Percent
   share data)             2007     2006    Change   2007     2006    Change
                        -------- -------- -------- -------- -------- -------
  Revenue
    Commissions, fees
     and other            $1,967  $1,825      8 %  $7,170   $6,660      8 %
    Investment income         65      56     16       301      221     36
                        -------- -------- -------- -------- -------- -------
      Total revenue        2,032   1,881      8     7,471    6,881      9
                        -------- -------- -------- -------- -------- -------

  Expenses
    Compensation and
     benefits              1,168   1,158      1     4,388    4,225      4
    Other general
     expenses                502     429     17     1,726    1,637      5
    Depreciation and
     amortization             53      68    (22)      194      224    (13)
    Interest expense          36      30     20       138      129      7
    Provision for
     New York
     and other state
     settlements               -       1   (100)        1        3    (67)
                        -------- -------- -------- -------- -------- -------
      Total expenses       1,759   1,686      4     6,447    6,218      4
                        -------- -------- -------- -------- -------- -------


  Income from continuing
   operations before
   provision for income
   tax                       273     195     40     1,024      663     54
    Provision for
     income tax (2)           83      52     60       352      216     63
                        -------- -------- -------- -------- -------- -------
  Income from
   continuing operations      190     143     33       672      447     50

  Discontinued operations
    Income from
     discontinued
     operations               75     123    (39)      316      419    (25)
    Provision for
     income tax (3)           58      43     35       124      147    (16)
                        -------- -------- -------- -------- -------- -------
  Income from discontinued
   operations                 17      80    (79)      192      272    (29)
                        -------- -------- -------- -------- -------- -------
  Income before accounting
   change                    207     223     (7)      864      719     20
    Cumulative effect of
     change in accounting
     principle,
     net of tax (1)            -       -    N/A         -        1   (100)
                        -------- -------- -------- -------- -------- -------
  Net income                $207    $223     (7)%    $864     $720     20 %
                        ======== ======== ======== ======== ======== =======

  Basic net income per
   share:
    Continuing
     operations            $0.63   $0.46     37 %   $2.25    $1.41     60 %
    Discontinued
     operations             0.06    0.26    (77)     0.65     0.86    (24)
    Cumulative effect of
     change in accounting
     principle                 -       -      -         -        -      -
                        -------- -------- -------- -------- -------- -------
    Net income             $0.69   $0.72     (4)%   $2.90    $2.27     28 %
                        ======== ======== ======== ======== ======== =======

  Diluted net income per
   share:
    Continuing operations  $0.59   $0.43     37 %   $2.10    $1.33     58 %
    Discontinued
     operations             0.05    0.24    (79)     0.59     0.80    (26)
    Cumulative effect of
     change in accounting
     principle                 -       -      -         -        -      -
                        -------- -------- -------- -------- -------- -------
    Net income             $0.64   $0.67     (4)%   $2.69    $2.13     26 %
                        ======== ======== ======== ======== ======== =======

  Diluted average
   common and
   common equivalent
   shares outstanding      324.1   333.6            323.0    342.1
                        ======== ========          ======== ========


  (1) Adoption of FASB Statement No. 123R, "Share-Based Payments," effective
      January 1, 2006.

  (2) Tax rate from continuing operations is 30.4% and 26.7% for the fourth
      quarters ended December 31, 2007 and 2006, respectively,
      and 34.4% and 32.6% for the twelve months ended December 31, 2007 and
      2006, respectively.

  (3) Tax rate from discontinued operations is 77.3% and 35.0% for the
      fourth quarters ended December 31, 2007 and 2006, respectively,
      and 39.2% and 35.1% for the twelve months ended December 31, 2007 and
      2006, respectively.



  Aon Corporation
  Revenue from Continuing Operations

                                     Fourth Quarter Ended
                   ---------------------------------------------------------
                                                     Less:
                                                     Acqui-
                                                     sitions,
                                              Less:  Divest-  Less:  Organic
                                              Curr-  itures &  All   Revenue
                    Dec. 31, Dec. 31, Percent ency   Trans-   Other  Growth
  (millions)           2007     2006  Change  Impact  fers     (1)     (2)
                    -------- -------- ------- ------ ------- ------- -------
  Revenue
  Risk and
   Insurance
   Brokerage
   Services:
    Americas            $686    $654      5 %    2 %    - %     - %     3 %
    United Kingdom       234     206     14     10      1       4      (1)
    Europe,
     Middle East &
     Africa              359     291     23     12      2       4       5
    Asia Pacific         145     147     (1)    11     (2)     (5)     (5)
    Reinsurance
     brokerage and
     related
     services            227     224      1      1      1      (4)      3
                    -------- -------- ------- ------ ------- ------- -------
      Total Risk
       and
       Insurance
       Brokerage
       Services        1,651   1,522      8      6      1      (1)      2
                    -------- -------- ------- ------ ------- ------- -------
  Consulting:
    Consulting
     services            314     280     12      5      2       2       3
    Outsourcing           59      84    (30)     3     (1)      -     (32)
                    -------- -------- ------- ------ ------- ------- -------
      Total
       consulting        373     364      2      5      2       -      (5)
                    -------- -------- ------- ------ ------- ------- -------

  Unallocated
   revenue                13      18    (28)   N/A    N/A     N/A     N/A


  Intersegment
   revenues               (5)    (23)   N/A    N/A    N/A     N/A     N/A
                    -------- -------- ------- ------ ------- ------- -------
     Total            $2,032  $1,881      8 %    6 %    1 %     - %     1 %
                    ======== ======== ======= ====== ======= ======= =======


  (1) Includes the impact of investment income, reimbursable expenses and
      unusual items.

  (2) Organic revenue growth excludes the impact of foreign exchange,
      acquisitions, divestitures, transfers and items described in (1).



  Aon Corporation
  Revenue from Continuing Operations

                                    Twelve Months Ended
                     -------------------------------------------------------
                                                     Less:
                                                     Acqui-
                                                     sitions,
                                              Less:  Divest-  Less:  Organic
                                              Curr-  itures &  All   Revenue
                    Dec. 31, Dec. 31, Percent ency   Trans-   Other  Growth
  (millions)           2007     2006  Change  Impact  fers     (1)     (2)
                    -------- -------- ------- ------ ------- ------- -------
  Revenue
  Risk and
   Insurance
   Brokerage
   Services:
    Americas        $2,405   $2,319      4 %     1 %     - %    (2)%    5 %
    United Kingdom     815      732     11       7       2       2      -
    Europe,
     Middle East &
     Africa          1,375    1,177     17       8       1       4      4
    Asia Pacific       506      478      6       9      (3)     (2)     2
    Reinsurance
     brokerage and
     related
     services          958      922      4       2       1      (1)     2
                    -------- -------- ------- ------ ------- ------- -------
      Total Risk
       and Insurance
       Brokerage
       Services      6,059    5,628      8       4       1       -      3
                    -------- -------- ------- ------ ------- ------- -------
  Consulting:
    Consulting
     services        1,117      989     13       4       2       2      5
    Outsourcing        235      293    (20)      3       -      (1)   (22)
                    -------- -------- ------- ------ ------- ------- -------
      Total
       consulting    1,352    1,282      5       4       2       -     (1)
                    -------- -------- ------- ------ ------- ------- -------

  Unallocated
   revenue              89       30    197     N/A     N/A     N/A    N/A

  Intersegment
   revenues            (29)     (59)   N/A     N/A     N/A     N/A    N/A
                    -------- -------- ------- ------ ------- ------- -------
      Total         $7,471   $6,881      9 %     4 %     1 %     2 %    2 %
                    ======== ======== ======= ====== ======= ======= =======


  (1) Includes the impact of investment income, reimbursable expenses and
      unusual items.

  (2) Organic revenue growth excludes the impact of foreign exchange,
      acquisitions, divestitures, transfers and items described in (1).



  Aon Corporation - Segments
  Risk and Insurance Brokerage Services - Continuing Operations
  ---------------------------------------------------------------

                            Fourth Quarter Ended      Twelve Months Ended
                        -------------------------- -------------------------
                         Dec. 31, Dec. 31, Percent Dec. 31, Dec. 31, Percent
  (millions)               2007    2006     Change   2007    2006    Change
                        -------- -------- -------- -------- -------- -------
  Revenue
    Commissions, fees
     and other           $1,599   $1,478      8 %   $5,853   $5,432     8 %
    Investment income        52       44     18        206      196     5
                        -------- -------- -------- -------- -------- -------
      Total revenue       1,651    1,522      8      6,059    5,628     8
                        -------- -------- -------- -------- -------- -------

  Expenses
    Compensation
     and benefits           932      927      1      3,498    3,362     4
    Other expenses          438      399     10      1,524    1,425     7
                        -------- -------- -------- -------- -------- -------
      Total expenses      1,370    1,326      3      5,022    4,787     5
                        -------- -------- -------- -------- -------- -------

  Income before
   provision for
   income tax              $281     $196     43 %   $1,037     $841    23 %
                        ======== ======== ======== ======== ======== =======

  Pretax income
   margin                 17.0%    12.9%             17.1%    14.9%


  Consulting - Continuing Operations

                            Fourth Quarter Ended     Twelve Months Ended
                        -------------------------- -------------------------
                         Dec. 31, Dec. 31, Percent Dec. 31, Dec. 31, Percent
  (millions)               2007    2006     Change   2007    2006    Change
                        -------- -------- -------- -------- -------- -------
  Revenue
    Commissions, fees
     and other            $372      $363      2 %   $1,343   $1,277     5 %
    Investment income        1         1      -          9        5    80
                        -------- -------- -------- -------- -------- -------
      Total revenue        373       364      2      1,352    1,282     5
                        -------- -------- -------- -------- -------- -------

  Expenses
    Compensation and
     benefits              219       217      1        823      811     1
    Other expenses          94        98     (4)       340      351    (3)
                        -------- -------- -------- -------- -------- -------
      Total expenses       313       315     (1)     1,163    1,162     -
                        -------- -------- -------- -------- -------- -------

  Income before
   provision for
   income tax              $60       $49     22 %     $189     $120    58 %
                        ======== ======== ======== ======== ======== =======

  Pretax income
   margin                16.1%     13.5%             14.0%     9.4%


  Reconciliation of operating segment income before provision for income tax
  to income from continuing operations before provision for income tax:


                              Fourth Quarter Ended    Twelve Months Ended
                         ------------------------- -------------------------
                         Dec. 31, Dec. 31, Percent Dec. 31, Dec. 31, Percent
  (millions)               2007    2006     Change   2007    2006    Change
                        -------- -------- -------- -------- -------- -------

   Operating segment
    income:
     Risk and
      Insurance
      Brokerage
      Services            $281      $196     43 %   $1,037     $841    23 %
     Consulting             60        49     22        189      120    58
                        -------- -------- -------- -------- -------- -------
   Operating segment
    income before
    provision for
    income tax             341       245     39      1,226      961    28
   Property & Casualty
    operations              (4)       (3)    33        (13)     (78)  (83)
   Unallocated
    investment income       11        10     10         81       15   440
   Unallocated expenses    (39)      (27)    44       (132)    (106)   25
   Interest expense        (36)      (30)    20       (138)    (129)    7
                        -------- -------- -------- -------- -------- -------
   Income from continuing
    operations before
    provision
    for income tax        $273      $195     40 %   $1,024     $663    54 %
                        ======== ======== ======== ======== ======== =======



  Aon Corporation
  Reconciliation of the Impact of Non-GAAP Measures on Diluted Earnings Per
   Share
  Fourth Quarter and Twelve Months Ended December 31, 2007 and 2006

                           Fourth Quarter Ended       Twelve Months Ended
                        -------------------------  -------------------------
                        Dec. 31, Dec. 31, Percent  Dec. 31, Dec. 31, Percent
  (millions except per    2007     2006   Change     2007     2006   Change
    share data)         -------- -------- -------  -------- -------- -------


  Income from
   continuing
   operations before
   provision for income
   taxes - as reported     $273     $195     40 %  $1,024     $663     54 %
   Adjustments:
    Restructuring
     charges                 34       78               85      159
    Gain on sale of
     businesses              (6)       -              (36)       -
    Resolution of U.K.
     balance sheet
     reconciliation
     difference              15        -               15        -
    Reinsurance
     litigation               -        -               21        -
    Gain on sale of
     Cambridge preferred
     stock investment         -        -                -      (35)
    Gain on sale of
     building in Spain        -        -                -      (30)
    Contingent
     commissions              -        -                -      (15)
    Property & Casualty
     reserve
     adjustments              -        -                -       81
    Endurance warrants        -        -                -       14
                        -------- --------          -------- --------


  Income from
   continuing
   operations before
   provision for
   income taxes - as
   adjusted                 316      273     16     1,109      837     32
  Provision for income
   taxes (1)                 93       79              350      277
                        -------- -------- -------  -------- -------- -------
  Income from
   continuing
   operations - as
   adjusted                $223     $194     15 %    $759     $560     36 %
                        ======== ======== =======  ======== ======== =======
  Diluted earnings per
   share from
   continuing
   operations - as
   adjusted               $0.69    $0.59     17 %   $2.37    $1.66     43 %
                        ======== ======== =======  ======== ======== =======

  Income from
   discontinued
   operations before
   provision for income
   taxes - as reported      $75     $123    (39)%    $316     $419    (25)%
   Adjustments:
    Restructuring
     charges                  -        8                -        8
    CPG reserve
     adjustment               -        -                -       21
    CPG gain on sale          -      (27)               -      (27)
    AWG gain on sale          -      (16)               -      (16)
                        -------- --------          -------- --------

  Income from
   discontinued
   operations before
   provision for income
   taxes - as adjusted       75       88    (15)      316      405    (22)
  Provision for income
   taxes (2)                 30       19               96      130
                        -------- -------- -------  -------- -------- -------
  Income from
   discontinued
   operations - as
   adjusted                 $45      $69    (35)%    $220     $275    (20)%
                        ======== ======== =======  ======== ======== =======
  Diluted earnings per
   share from
   discontinued
   operations - as
   adjusted               $0.14    $0.21    (33)%   $0.68    $0.80    (15)%
                        ======== ======== =======  ======== ======== =======

  Total earnings
   per share              $0.83    $0.80      4 %   $3.05    $2.46     24 %
                        ======== ======== =======  ======== ======== =======

  Diluted average
   common and common
   equivalent shares
   outstanding
   (millions)             324.1    333.6            323.0    342.1
                        ======== ========          ======== ========

  (1) Tax rate from continuing operations is 29.4% and 28.9% for the fourth
      quarters ended December 31, 2007 and 2006, respectively, and 31.6% and
      33.1% for the twelve months ended December 31, 2007 and 2006,
      respectively.

  (2) Tax rate from discontinued operations is 40.0% and 21.6% for the
      fourth quarters ended December 31, 2007 and 2006, respectively,
      and 30.4% and 32.1% for the twelve months ended December 31, 2007 and
      2006, respectively.



  Aon Corporation
  Reconciliation of Non-GAAP Measures - Segments
  Fourth Quarter and Twelve Months Ended December 31, 2007 and 2006 (1)

                                   Fourth Quarter Ended December 31, 2007
                                --------------------------------------------
                                   Risk and
                                  Insurance             Unallocated
                                  Brokerage             Income &
  (millions)                       Services  Consulting Expense       Total
                                -----------  ---------- -----------  -------
  Revenue as reported                $1,651      $373         $8     $2,032

  Income (loss) from
   continuing operations
   before provision for
   income tax - as reported            $281       $60       $(68)      $273
   Restructuring charges                 30         4          -         34
   Gain on sale of businesses            (6)        -          -         (6)
   Resolution of U.K. balance
    sheet reconciliation
    difference                            -         -         15         15
   Reinsurance litigation                 -         -          -          -
                                -----------  ---------- -----------  -------
  Income (loss) from
   continuing operations
   before provision for
   income tax - as adjusted            $305       $64       $(53)      $316
                                ===========  ========== ===========  =======

  Income from continuing
   operations before
   provision for income tax -
   margins as adjusted                18.5%     17.2%         N/A     15.6%
                                ===========  ========== ===========  =======



                                   Twelve Months Ended December 31, 2007
                                --------------------------------------------
                                   Risk and
                                  Insurance             Unallocated
                                  Brokerage             Income &
  (millions)                       Services  Consulting Expense       Total
                                -----------  ---------- -----------  -------
  Revenue as reported                $6,059    $1,352        $60     $7,471

  Income (loss) from continuing
   operations before provision
   for income tax - as reported      $1,037      $189      $(202)    $1,024
   Restructuring charges                 74        11          -         85
   Gain on sale of businesses           (36)        -          -        (36)
   Resolution of U.K. balance
    sheet reconciliation
    difference                            -         -         15         15
   Reinsurance litigation                21         -          -         21
                                -----------  ---------- -----------  -------
  Income (loss) from
   continuing operations
   before provision for income
   tax - as adjusted                 $1,096      $200      $(187)    $1,109
                                ===========  ========== ===========  =======

  Income from continuing
   operations before provision
   for income tax - margins as
   adjusted                           18.1%     14.8%         N/A     14.8%
                                ===========  ========== ===========  =======



                                    Fourth Quarter Ended December 31, 2006
                                --------------------------------------------
                                   Risk and
                                  Insurance              Unallocated
                                  Brokerage              Income &
  (millions)                       Services  Consulting  Expense      Total
                                -----------  ---------- -----------  -------
  Revenue as reported                $1,522      $364        $(5)    $1,881
   Gain on Cambridge preferred
    stock investment                      -         -          -          -
   Contingent commissions                 -         -          -          -
   Endurance warrants                     -         -          -          -
                                -----------  ---------- -----------  -------
  Revenue as adjusted                $1,522      $364        $(5)    $1,881
                                ===========  ========== ===========  =======

  Income (loss) from
   continuing operations
   before provision for income
   tax - as reported                   $196       $49       $(50)      $195
   Restructuring charges                 70         7          1         78
   Gain on sale of Cambridge
    preferred stock investment            -         -          -          -
   Gain on sale of building
    in Spain                              -         -          -          -
   Contingent commissions                 -         -          -          -
   Property & Casualty reserve
    adjustments                           -         -          -          -
   Endurance warrants                     -         -          -          -
                                -----------  ---------- -----------  -------
  Income (loss) from
   continuing operations
   before provision for
   income tax - as adjusted            $266       $56       $(49)      $273
                                ===========  ========== ===========  =======

  Income from continuing
   operations before provision
   for income tax - margins as
   adjusted                           17.5%     15.4%         N/A     14.5%
                                ===========  ========== ===========  =======



                                    Twelve Months Ended December 31, 2006
                                --------------------------------------------
                                   Risk and
                                   Insurance             Unallocated
                                   Brokerage             Income &
  (millions)                        Services Consulting  Expense      Total
                                -----------  ---------- -----------  -------
  Revenue as reported                $5,628    $1,282       $(29)    $6,881
   Gain on Cambridge preferred
    stock investment                    (35)        -          -        (35)
   Contingent commissions               (15)        -          -        (15)
   Endurance warrants                     -         -         14         14
                                -----------  ---------- -----------  -------
  Revenue as adjusted                $5,578    $1,282       $(15)    $6,845
                                ===========  ========== ===========  =======

  Income (loss) from
   continuing operations
   before provision for income
   tax - as reported                   $841      $120      $(298)      $663
   Restructuring charges                136        20          3        159
   Gain on sale of Cambridge
    preferred stock investment          (35)        -          -        (35)
   Gain on sale of building
    in Spain                            (30)        -          -        (30)
   Contingent commissions               (15)        -          -        (15)
   Property & Casualty reserve
    adjustments                           -         -         81         81
   Endurance warrants                     -         -         14         14
                                -----------  ---------- -----------  -------
  Income (loss) from
   continuing operations
   before provision for income
   tax - as adjusted                   $897      $140      $(200)      $837
                                ===========  ========== ===========  =======

  Income from continuing
   operations before provision
   for income tax - margins as
   adjusted                           16.1%     10.9%         N/A     12.2%
                                ===========  ========== ===========  =======


  (1) Certain noteworthy items impacted revenue and pretax income in 2007
      and 2006, which are described in this schedule.  The revenue and
      pretax income (loss) amounts and related margins shown in the captions
      "Revenue as adjusted" and "Income (loss) from continuing operations
      before provision for income tax - as adjusted" are non-GAAP measures.



  Aon Corporation
  2007 Restructuring Plan
                                                                 |
  By Type:                                      Actual           |Estimated
                                      ---------------------------|----------
                                        Third   Fourth    Total  |
                                       Quarter  Quarter Incurred |
  (millions)                            2007     2007    to Date |   Total
                                      ---------------------------|----------
  Workforce reduction (Compensation                              |
   and benefits)                           $10       $7       $17|     $220
  Lease consolidation (Other general                             |
   expenses)                                 4       18        22|       79
  Asset impairments (Depreciation and                            |
   amortization)                             2        2         4|       41
  Other costs associated with                                    |
   restructuring (Other general                                  |
   expenses)                                 1        2         3|       20
                                      ---------------------------|----------
  Total restructuring and related                                |
   expenses                                $17      $29       $46|     $360
                                      ===========================|==========


  By Segment:                                   Actual           |Estimated
                                      ---------------------------|----------
                                        Third   Fourth    Total  |
                                       Quarter  Quarter Incurred |
  (millions)                            2007     2007    to Date |   Total
                                      ---------------------------|----------
  Risk and Insurance Brokerage                                   |
   Services                                $16      $25       $41|     $320
  Consulting                                 1        4         5|       40
                                      ---------------------------|----------
  Total restructuring and related                                |
   expenses                                $17      $29       $46|     $360
                                      ===========================|==========

  2005 Restructuring Plan

  By Type:                                           Actual
                            ------------------------------------------------
                                                    Nine  Fourth  Full
                             Full Year  Full Year  Months Quarter Year
  (millions)                    2005       2006     2007   2007   2007 Total
                            ------------------------------------------------
  Workforce reduction
   (Compensation and
   benefits)                     $116       $116    $18      $3   $21   $253
  Lease consolidation (Other
   general expenses)               20         27     11       2    13     60
  Asset impairments
   (Depreciation and
   amortization)                   17         12      3       -     3     32
  Other costs associated with
   restructuring (Other
   general expenses)                5         12      4       -     4     21
                            ------------------------------------------------
  Total restructuring and
   related expenses              $158       $167    $36      $5   $41   $366
                            ================================================


  By Segment:                                        Actual
                            ------------------------------------------------
                                                    Nine  Fourth  Full
                             Full Year  Full Year  Months Quarter Year
  (millions)                    2005       2006     2007    2007  2007 Total
                            ------------------------------------------------
  Risk and Insurance
   Brokerage Services            $143       $136    $28      $5   $33   $312
  Consulting                        8         20      6       -     6     34
  Unallocated income and
   expense                          4          3      -       -     -      7
                            ------------------------------------------------
  Restructuring and related
   expenses - continuing
   operations                     155        159     34       5    39    353
  Restructuring and related
   expenses - discontinued
   operations                       3          8      2       -     2     13
                            ------------------------------------------------
  Total restructuring and
   related expenses              $158       $167    $36      $5   $41   $366
                            ================================================



  Aon Corporation
  Consolidated Summary of Operations - Reclassified for Discontinued
  Operations
                                                    2006
                                --------------------------------------------
  (millions except per share       1st      2nd      3rd       4th     Full
   data)                         Quarter  Quarter  Quarter   Quarter   Year
                                --------------------------------------------
  Revenue
   Commissions, fees and other   $1,610   $1,644   $1,581    $1,825  $6,660
   Investment income                 59       51       55        56     221
                                --------  -------  -------  -------- -------
    Total revenue                 1,669    1,695    1,636     1,881   6,881
                                --------  -------  -------  -------- -------

  Expenses
   Compensation and benefits      1,005    1,037    1,025     1,158   4,225
   Other general expenses           371      387      450       429   1,637
   Depreciation and
    amortization                     52       51       53        68     224
   Interest expense                  31       34       34        30     129
   Provision for New York and
    other state settlements           1        1        -         1       3
                                --------  -------  -------  -------- -------
    Total expenses                1,460    1,510    1,562     1,686   6,218
                                --------  -------  -------  -------- -------

  Income from continuing
   operations before provision
   for income tax                   209      185       74       195     663
   Provision for income tax          73       64       27        52     216
                                --------  -------  -------  -------- -------
  Income from continuing
   operations                       136      121       47       143     447

  Discontinued operations
   Income from discontinued
    operations                       96      111       89       123     419
   Provision for income tax          35       39       30        43     147
                                --------  -------  -------  -------- -------
  Income from discontinued
   operations                        61       72       59        80     272
                                --------  -------  -------  -------- -------

  Income before accounting
   change                           197      193      106       223     719
   Cumulative effect of change
    in accounting principle, net
    of tax                            1        -        -         -       1
                                --------  -------  -------  -------- -------
  Net income                       $198     $193     $106      $223    $720
                                ========  =======  =======  ======== =======

  Basic net income per share:
   Income from continuing
    operations                    $0.42    $0.37    $0.15     $0.46   $1.41
   Discontinued operations         0.19     0.23     0.19      0.26    0.86
   Cumulative effect of change
    in accounting principle           -        -        -         -       -
                                --------  -------  -------  -------- -------
   Net income                     $0.61    $0.60    $0.34     $0.72   $2.27
                                ========  =======  =======  ======== =======

  Dilutive net income per share:
   Income from continuing
    operations                    $0.40    $0.36    $0.15     $0.43   $1.33
   Discontinued operations         0.17     0.21     0.17      0.24    0.80
   Cumulative effect of change
    in accounting principle           -        -        -         -       -
                                --------  -------  -------  -------- -------
   Net income                     $0.57    $0.57    $0.32     $0.67   $2.13
                                ========  =======  =======  ======== =======

  Dilutive average common and
   common equivalent shares
   outstanding                    350.2    344.8    340.1     333.6   342.1
                                ========  =======  =======  ======== =======



                                                  2007
                                --------------------------------------------
  (millions except per share       1st      2nd      3rd       4th     Full
   data)                         Quarter  Quarter  Quarter   Quarter   Year
                                --------------------------------------------
  Revenue
    Commissions, fees and other  $1,729   $1,776   $1,698    $1,967  $7,170
    Investment income                69       90       77        65     301
                                --------  -------  -------  -------- -------
      Total revenue               1,798    1,866    1,775     2,032   7,471
                                --------  -------  -------  -------- -------

  Expenses
    Compensation and benefits     1,053    1,109    1,058     1,168   4,388
    Other general expenses          423      395      406       502   1,726
    Depreciation and
     amortization                    47       46       48        53     194
    Interest expense                 35       34       33        36     138
    Provision for New York and
     other state settlements          -        1        -         -       1
                                --------  -------  -------  -------- -------
      Total expenses              1,558    1,585    1,545     1,759   6,447
                                --------  -------  -------  -------- -------

  Income from continuing
   operations before provision
   for income tax                   240      281      230       273   1,024
    Provision for income tax         75       98       96        83     352
                                --------  -------  -------  -------- -------
  Income from continuing
   operations                       165      183      134       190     672

  Discontinued operations
    Income from discontinued
     operations                      73       87       81        75     316
    Provision for income tax         25       30       11        58     124
                                --------  -------  -------  -------- -------
  Income from discontinued
   operations                        48       57       70        17     192
                                --------  -------  -------  -------- -------

  Income before accounting
   change                           213      240      204       207     864
    Cumulative effect of change
     in accounting principle,
     net of tax                       -        -        -         -       -
                                --------  -------  -------  -------- -------
  Net income                       $213     $240     $204      $207    $864
                                ========  =======  =======  ======== =======

  Basic net income per share:
    Income from continuing
     operations                   $0.55    $0.62    $0.45     $0.63   $2.25
    Discontinued operations        0.16     0.19     0.24      0.06    0.65
    Cumulative effect of change
     in accounting principle          -        -        -         -       -
                                --------  -------  -------  -------- -------
    Net income                    $0.71    $0.81    $0.69     $0.69   $2.90
                                ========  =======  =======  ======== =======

  Dilutive net income per share:
    Income from continuing
     operations                   $0.51    $0.57    $0.42     $0.59   $2.10
    Discontinued operations        0.15     0.18     0.22      0.05    0.59
    Cumulative effect of change
     in accounting principle          -        -        -         -       -
                                --------  -------  -------  -------- -------
    Net income                    $0.66    $0.75    $0.64     $0.64   $2.69
                                ========  =======  =======  ======== =======

  Dilutive average common and
   common equivalent shares
   outstanding                    324.4    321.9    321.5     324.1   323.0
                                ========  =======  =======  ======== =======



  Aon Corporation
  Segments  - Reclassification for Discontinued Operations

                                                      2006
                             -----------------------------------------------
                                 1st      2nd      3rd      4th
  (millions)                   Quarter  Quarter  Quarter  Quarter  Full Year
                             ---------  -------  -------  -------  ---------
  Revenue
  Risk and insurance
   brokerage services          $1,380   $1,385   $1,341   $1,522     $5,628

  Consulting                      308      309      301      364      1,282

  Insurance underwriting:
    As reported                   495      505      519      527      2,046
    Less: reclassification
     to discontinued
     operations                  (490)    (504)    (518)    (519)    (2,031)
    Less: reclassification
     to unallocated
     revenue                       (5)      (1)      (1)      (8)       (15)
                             ---------  -------  -------  -------  ---------
     As reclassified                -        -        -        -          -

  Unallocated revenue:
    As reported                    (3)      18       19       23         57
    Less: reclassification
     to discontinued
     operations                    (6)      (9)     (14)     (13)       (42)
    Add:  reclassification
     from insurance
     underwriting                   5        1        1        8         15
                             ---------  -------  -------  -------  ---------
     As reclassified               (4)      10        6       18         30

  Intersegment revenues           (15)      (9)     (12)     (23)       (59)
                             ---------  -------  -------  -------  ---------
     Total                     $1,669   $1,695   $1,636   $1,881     $6,881
                             =========  =======  =======  =======  =========

  Income (loss) before
   income tax

  Risk and insurance brokerage
   services                      $240     $215     $190     $196       $841

  Consulting                       30       23       18       49        120

  Insurance underwriting :
    As reported                    53       75      (27)      36        137
    Less: reclassification to
     discontinued operations      (53)     (73)     (54)     (42)      (222)
    Less: reclassification to
     unallocated income             -       (2)      81        6         85
                             ---------  -------  -------  -------  ---------
     As reclassified                -        -        -        -          -

  Unallocated income:
    As reported                   (57)     (46)     (42)     (33)      (178)
    Less:  reclassification to
     discontinued operations       (4)      (9)     (11)     (11)       (35)
    Add:  reclassification from
     insurance underwriting         -        2      (81)      (6)       (85)
                             ---------  -------  -------  -------  ---------
     As reclassified              (61)     (53)    (134)     (50)      (298)
                             ---------  -------  -------  -------  ---------

     Total                       $209     $185      $74     $195       $663
                             =========  =======  =======  =======  =========

  Income from continuing
   operations before income
   tax - margins
  Risk and insurance brokerage
   services                     17.4%    15.5%    14.2%    12.9%      14.9%

  Consulting                     9.7%     7.4%     6.0%    13.5%       9.4%

  Insurance underwriting:
     As reported                10.7%    14.9%    -5.2%     6.8%       6.7%
     As reclassified              N/A      N/A      N/A      N/A        N/A

  Total:
     As reported                12.3%    12.1%     6.4%    10.3%      10.3%
     As reclassified            12.5%    10.9%     4.5%    10.4%       9.6%



                                                       2007
                                        ----------------------------------
                                          1st      2nd      3rd     Nine
  (millions)                            Quarter  Quarter  Quarter  Months
                                        -------  -------  -------  -------
  Revenue
  Risk and insurance brokerage services  $1,456   $1,515   $1,437  $4,408

  Consulting                                329      325      325     979

  Insurance underwriting :
    As reported                             574      610      627   1,811
    Less: reclassification to
     discontinued operations               (573)    (607)    (624) (1,804)
    Less: reclassification to
     unallocated revenue                     (1)      (3)      (3)     (7)
                                        -------  -------  -------  -------
     As reclassified                          -        -        -       -

  Unallocated revenue:
    As reported                              32       44       26     102
    Less: reclassification to
     discontinued operations                (10)     (15)      (8)    (33)
    Add:  reclassification from
     insurance underwriting                   1        3        3       7
                                        -------  -------  -------  -------
     As reclassified                         23       32       21      76

  Intersegment revenues                     (10)      (6)      (8)    (24)
                                        -------  -------  -------  -------
     Total                               $1,798   $1,866   $1,775  $5,439
                                        =======  =======  =======  =======

  Income (loss) before income tax

  Risk and insurance brokerage services    $242     $278     $236    $756

  Consulting                                 47       44       38     129

  Insurance underwriting :
    As reported                              59       67       63     189
    Less: reclassification to
     discontinued operations                (64)     (70)     (70)   (204)
    Less: reclassification to
     unallocated income                       5        3        7      15
                                        -------  -------  -------  -------
     As reclassified                          -        -        -       -

  Unallocated income:
    As reported                             (37)     (24)     (25)    (86)
    Less:  reclassification to
     discontinued operations                 (7)     (14)     (12)    (33)
    Add:  reclassification from
     insurance underwriting                  (5)      (3)      (7)    (15)
                                        -------  -------  -------  -------
     As reclassified                        (49)     (41)     (44)   (134)
                                        -------  -------  -------  -------

     Total                                 $240     $281     $230    $751
                                        =======  =======  =======  =======

  Income from continuing operations
   before income tax - margins
  Risk and insurance brokerage services   16.6%    18.3%    16.4%   17.2%

  Consulting                              14.3%    13.5%    11.7%   13.2%

  Insurance underwriting:
     As reported                          10.3%    11.0%    10.0%   10.4%
     As reclassified                        N/A      N/A      N/A     N/A

  Total:
     As reported                          13.1%    14.7%    13.0%   13.6%
     As reclassified                      13.3%    15.1%    13.0%   13.8%



  Aon Corporation
  Accident & Health and Life
                                                     2006
                                  ------------------------------------------
                                     1st      2nd      3rd      4th    Full
  (millions except per share data) Quarter  Quarter  Quarter  Quarter  Year
                                  ------------------------------------------
  Revenue
    Commissions and fees               $3       $7       $6       $6     $22
    Premiums and other                463      472      489      489   1,913
    Investment income                  30       34       37       37     138
                                  --------  -------  -------  ------- ------

     Total revenue                    496      513      532      532   2,073
                                  --------  -------  -------  ------- ------

  Expenses
    Compensation and benefits          92       94       91       99     376
    Other general expenses             94       80      107      104     385
    Benefits to policyholders         250      253      266      273   1,042
    Depreciation and amortization       3        4        3        3      13
                                  --------  -------  -------  ------- ------
     Total expenses                   439      431      467      479   1,816
                                  --------  -------  -------  ------- ------

  Income before provision for
   income tax                          57       82       65       53     257
    Provision for income tax           20       28       22        8      78
                                  --------  -------  -------  ------- ------
  Net income                          $37      $54      $43      $45    $179
                                  ========  =======  =======  ======= ======

  Basic net income per share        $0.11    $0.17    $0.14    $0.15   $0.56
                                  ========  =======  =======  ======= ======

  Dilutive net income per share     $0.11    $0.16    $0.13    $0.13   $0.52
                                  ========  =======  =======  ======= ======

  Dilutive average common and
   common equivalent shares
   outstanding                      350.2    344.8    340.1    333.6   342.1
                                  ========  =======  =======  ======= ======



                                                     2007
                                  ------------------------------------------
                                     1st      2nd      3rd      4th     Full
  (millions except per share data) Quarter  Quarter  Quarter  Quarter   Year
                                  ------------------------------------------
  Revenue
    Commissions and fees               $6       $5       $6      $12     $29
    Premiums and other                539      573      587      611   2,310
    Investment income                  38       44       39       42     163
                                  --------  -------  -------  ------- ------
     Total revenue                    583      622      632      665   2,502
                                  --------  -------  -------  ------- ------

  Expenses
    Compensation and benefits          99       98       98       99     394
    Other general expenses             93       89       87      139     408
    Benefits to policyholders         317      348      363      338   1,366
    Depreciation and amortization       3        3        2        3      11
                                  --------  -------  -------  ------- ------
     Total expenses                   512      538      550      579   2,179
                                  --------  -------  -------  ------- ------

  Income before provision for
   income tax                          71       84       82       86     323
    Provision for income tax           24       29       28       56     137
                                  --------  -------  -------  ------- ------
  Net income                          $47      $55      $54      $30    $186
                                  ========  =======  =======  ======= ======

  Basic net income per share        $0.16    $0.19    $0.18    $0.10   $0.63
                                  ========  =======  =======  ======= ======

  Dilutive net income per share     $0.14    $0.17    $0.17    $0.09   $0.58
                                  ========  =======  =======  ======= ======

  Dilutive average common and
   common equivalent shares
   outstanding                      324.4    321.9    321.5    324.1   323.0
                                  ========  =======  =======  ======= ======

Source: Aon Corporation

CONTACT: Investors, Scott Malchow, Vice President, Investor Relations,
+1-312-381-3983, or Media, David Prosperi, Vice President, Global Public
Relations, +1-312-381-2485, both of Aon Corporation

Web site: http://www.aon.com/

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