AOC Aon Corp.

CHICAGO, Nov. 30 /PRNewswire-FirstCall/ -- Aon Corporation (NYSE:AOC) announced today the close of the sale of Aon Warranty Group (AWG) and its worldwide operations (including Virginia Surety Company) to Warrior Acquisition Corp., an affiliate of Onex Corporation, and the close of the sale of Construction Program Group (CPG) to Old Republic Insurance Company. The sale of AWG and CPG is expected to result in sales proceeds and dividends in excess of $800 million. Net cash proceeds are subject to final transaction costs and certain post closing adjustments. The Company currently expects to record a pretax gain and a modest after-tax loss associated with these transactions during the fourth quarter 2006. 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. Aon has 45,000 employees in 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. 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, 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. Investor Contact: Scott Malchow Vice President, Investor Relations 312-381-3983 Media Contact: Al Orendorff Director, Public Relations 312-381-3153 DATASOURCE: Aon Corporation CONTACT: Investor, Scott Malchow, Vice President, Investor Relations, +1-312-381-3983, or Media, Al Orendorff, Director, Public Relations, +1-312-381-3153, both of Aon Corporation Web site: http://www.aon.com/

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