According to managers in the technology industries surveyed by Aon (NYSE: AOC), prospects for the workforce will be strong in 2005 and beyond: 55 percent of respondents say that they believe their organization's total global workforce will increase. The study is part of Aon's 2005 "Tech Week" series of webcasts, beginning today, March 8.

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Respondents were asked if their global workforce will "go up," "stay the same," or "go down." Only 7 percent of the 889 respondents thought their workforce's size would decrease, with the remaining 38 percent seeing status quo. The survey included participants from technology industries, including high-tech, biotech and other niche technology companies, as well as technology managers in non-tech firms.

The Aon survey was conducted during the past three weeks, and the results kick off Aon's third annual Tech Week program. The complete webcast schedule is below - all webcasts are free of charge and will last no more than an hour. For individuals who cannot join a webcast live, all sessions will be archived for 90 days.

  Tech Week 2005 schedule:
  * Tuesday, March 8, 1:00 p.m. EST: "2005 Compensation Strategies in
    Uncertain Times," with John Radford and Tim Brown of Aon Consulting
    Radford Surveys.
  * Wednesday, March 9, 1:00 p.m. EST:" Meeting the Challenge in 2005: The
    Latest Global Compensation and Benefit Trends," with Don York and
    Olivier Maudiere of Aon Consulting Radford Surveys.
  * Wednesday, March 9, 4:00 p.m. EST: "Understanding Network Risk: What
    Technology Companies Need to Know," Tim Burke, Aon Technology Group.
  * Thursday, March 10, 1:00 p.m. EST: "Biotech HR in 2005: Keeping the
    Momentum Going," with John Radford of Aon Consulting Radford Surveys.
  * Thursday, March 10, 3:00 p.m. EST: "Emerging and Current Trends in Total
    Benefits," Laura Mensch and Riza Sychangco, Aon Consulting Canada.
  * Thursday, March 10, 4:00 p.m. EST, special North American biotechnology
    session: "Managing Risk in a Clinical Trial Environment," Jim Goring,
    Aon Technology Risk Services.

More information about the Tech Week presenters, sessions and registration is available at http://www.aon.com/techweek .

About Aon

Aon Corporation ( http://www.aon.com/ ) is a leading provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting. The company employs approximately 48,000 professionals in its 500 offices in more than 120 countries. Backed by broad resources, industry knowledge and technical expertise, Aon professionals help a wide range of clients develop effective risk management and workforce productivity solutions.

   For more information, contact:
   Dave Van de Walle, +1.312.381.5028, dave_vandewalle@aon.com.

This press release contains certain statements relating to future results, 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 the general economic conditions in different countries around the world, fluctuations in global equity and fixed income markets, exchange rates, rating agency actions, resolution of pending regulatory investigations and related issues, including those related to compensation arrangements with underwriters, pension funding, ultimate paid claims may be different from actuarial estimates and actuarial estimates may change over time, changes in commercial property and casualty markets and commercial premium rates, the competitive environment, the actual costs of resolution of contingent liabilities and other loss contingencies, and the heightened level of potential errors and omissions liability arising from placements of complex policies and sophisticated reinsurance arrangements in an insurance market in which insurer reserves are under pressure. 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.

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SOURCE: Aon Corporation

CONTACT: Dave Van de Walle of Aon Corporation, +1-312-381-5028,
dave_vandewalle@aon.com

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