Aon Consulting, the human capital and management consulting organization of Aon Corporation (NYSE: AOC), has announced that it will be changing the structure of its Human Resources Outsourcing group in order to further integrate its consulting and outsourcing services.

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Moving forward, leadership of Aon Consulting's U.S. Human Resources (HR) Outsourcing group will reside with Roger Vaughn, U.S. president, Aon Consulting, who will be supported by Randy Keeton, executive vice president, and Steve Lutz, chief sales officer, both with Aon's HR Outsourcing group. Keeton will be responsible for the HR Outsourcing group's client service delivery and operations functions, while Lutz will lead the sales and marketing functions. Larry Kurzner, senior vice president of marketing with Aon's HR Outsourcing group, will act as the liaison to the outsourcing analyst and advisor community.

Vaughn said, "Aon's HR Outsourcing group has grown into one of the world's leading service providers in the outsourcing marketplace. Our success is the result of intense focus on providing the highest quality services to clients, growing our service delivery capabilities through development of key strategic alliances, and increasing the efficiency of our operations to provide competitively-priced services that deliver the highest possible ROI. At this time, integrating our outsourcing services with our consulting services, thereby providing seamless HR consulting and administration services, is the next logical step in our growth."

The restructuring results in the elimination of the position of president of Aon's HR Outsourcing group. Gary Budzinski, the former president of Aon's HR Outsourcing group, will have a new role in Aon Consulting, reporting directly to Vaughn, and will assist him on strategic corporate initiatives. The position of chief strategy officer for Aon's HR Outsourcing group has also been eliminated, with its function now migrating into Vaughn's senior leadership team.

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. There are 47,000 employees working in Aon's 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.

Aon Consulting is among the top global human resources consulting firms, with 2004 revenues of $1.247 billion and 7,000 professionals in 120 offices throughout the world. Aon Consulting delivers integrated consulting solutions to help clients with employee benefits, human resources outsourcing, compensation, communication and management consulting.

  Contact:
  Dana Sohn, Aon Consulting, +1.312.381.4786, dana_sohn@aon.com

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, 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 regulatory investigations brought by state attorneys general and state insurance regulators related to our compensation arrangements with underwriters and related issues, the impact of class actions and individual lawsuits including client class actions, securities class actions, derivative actions, and ERISA class actions, 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.

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SOURCE: Aon Corporation

CONTACT: Dana Sohn of Aon Consulting, +1-312-381-4786,
dana_sohn@aon.com

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