Aon Declares Quarterly Dividend

CHICAGO, Oct. 12  /PRNewswire-FirstCall/ -- Aon Corporation (NYSE:AOC) today announced that the Board of Directors has declared a quarterly cash dividend of $0.15 per share on outstanding common stock. The dividend is payable on November 16, 2009 to shareholders of record on November 2, 2009.

About Aon

Aon Corporation (NYSE:AOC) is the leading global provider of risk management services, insurance and reinsurance brokerage, and human capital consulting. Through its more than 37,000 colleagues worldwide, Aon readily delivers distinctive client value via innovative and effective risk management and workforce productivity solutions. Aon's industry-leading global resources and technical expertise are delivered locally through more than 500 offices in more than 120 countries. Named the world's best broker by Euromoney magazine's 2008 and 2009 Insurance Survey, Aon also ranked highest on Business Insurance's listing of the world's largest insurance brokers based on commercial retail, wholesale, reinsurance and personal lines brokerage revenues in 2008 and 2009. A.M. Best deemed Aon the number one insurance broker based on brokerage revenues in 2007, 2008, and 2009, and Aon was voted best insurance intermediary, best reinsurance intermediary and best employee benefits consulting firm in 2007 and 2008 by the readers of Business Insurance. For more information on Aon, log onto http://www.aon.com/.

  Investor Contact:
  Scott Malchow
  Vice President, Investor Relations
  312-381-3983

  Media Contact:
  David Prosperi
  Vice President, Global Public Relations
  312-381-2485


DATASOURCE: Aon Corporation



CONTACT:  Investors, Scott Malchow, Vice President, Investor Relations,

[phone], or Media, David Prosperi, Vice President, Global Public

Relations, [phone], both of Aon Corporation



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

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