AOC Aon Corp.

CHICAGO, Aug. 18 /PRNewswire-FirstCall/ -- In the categories of best retail brokerage, best employee benefits consulting firm and best reinsurance intermediary, readers of Business Insurance have named Aon Corporation (NYSE:AOC) the industry leader in service, value, quality and innovation. This is the third consecutive year in which Aon Consulting and Aon Re Global were named best in the industry, and the second year in which Aon Risk Services was ranked highest. A best retail broker category wasn't included in the Readers Choice survey in 2006. (Logo: http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO) The results are published in the magazine's Aug. 18, 2008, edition and at http://www.businessinsurance.com/. Business Insurance is a leading insurance, reinsurance, risk management and human capital consulting trade journal, published weekly by Crain Communications Inc. "We pride ourselves on offering the best, most distinctive service to our clients," said Greg Case, Aon Corporation president and chief executive officer. "This recognition by the readers of Business Insurance is an honor and a challenge for all of us to continue providing innovative solutions and tangible results in the non-stop, ever-changing business world in which we live." For more information on Aon's distinctive products and services, visit aon.com. About Aon Aon Risk Services, with 26,000 professionals in 500 offices in 120 countries, provides multifaceted retail brokering and risk management services. Aon Consulting Worldwide is among the top global human capital consulting firms with 6,335 professionals in 117 offices worldwide, shaping the workplace of the future through benefits, talent management and rewards strategies and solutions. Aon Re Global, the world's largest reinsurance intermediary, provides clients with integrated capital solutions and services through a world-class network of experts in more than 35 countries. Aon Corporation (NYSE:AOC) is the leading global provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting. Through its 36,000 colleagues 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 named the world's best broker by Euromoney magazine's 2008 Insurance Survey. In 2008, Aon ranked highest on the Business Insurance ranking of the world's largest insurance brokers based on commercial retail, wholesale, reinsurance and personal lines brokerage revenues. Aon also was ranked by A.M. Best as the number one insurance broker based on brokerage revenues in 2007 and 2008, and was 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/. Media Contacts: Rahsaan Johnson 312-381-2684 Joe Micucci 312-381-4786 http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO http://photoarchive.ap.org/ DATASOURCE: Aon Corporation CONTACT: Rahsaan Johnson, +1-312-381-2684, , or Joe Micucci, +1-312-381-4786, , both of Aon Corporation Web site: http://www.aon.com/ http://aon.mediaroom.com/

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