CHICAGO, March 12 /PRNewswire-FirstCall/ -- A statement from Aon Corp.: Aon applauds Governor Rod Blagojevich's efforts to craft a health care plan that would provide affordable coverage options to the uninsured and underinsured, and address catastrophic illness and injury. Aon's own Health Care Trend survey warns about the impact of double-digit health care rate increases. Discussions about the details of a plan should focus on the importance of acquiring quality health care information, committing to preventive care, and reducing lifestyle-related risk factors. The funding and program structure for any such plan, of course, must not be unduly burdensome to individuals or businesses and must create the proper incentives for individuals to use health resources wisely. (Logo: http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO ) 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 43,000 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. For more information contact: Al Orendorff 312.381.3153 http://www.aon.com/newsroom 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 execute the stock repurchase program, our ability to obtain regulatory or legislative changes to permit continuous sales of our supplemental Medicare health product, 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 state attorneys general, state insurance regulators, federal prosecutors, and federal regulators, 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. http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO http://photoarchive.ap.org/ DATASOURCE: Aon Corporation CONTACT: Al Orendorff of Aon Corporation, +1-312-381-3153, or Web site: http://www.aon.com/

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