BALTIMORE (December 28, 2010) – Aon Risk Solutions, the global risk management business of Aon Corporation (NYSE: AON), today announced that its Baltimore office received a 2010 Mayor's Business Recognition Award in recognition of its outstanding community service in the Baltimore area. Nominated by a member of the Baltimore Development Corporation, Aon’s employees were honored at a luncheon on December 14 for its work with the Ronald McDonald House and Habitat for Humanity.

Aon’s Baltimore office has partnered with both organizations for three years. This year, the company’s volunteer efforts included breakfast preparation at the Ronald McDonald House and the building of three Habitat for Humanity homes in West Baltimore.

“We are an organization dedicated to service and solutions, and are humbled by this honor,” said Otis Tolbert, Jr., resident managing director for Aon Risk Solutions’ Capitol offices.

The annual luncheon, which is presented by the Greater Baltimore Committee and the Baltimore Development Corporation, took place at the Hyatt Regency Baltimore. More than 400 Greater Baltimore Committee members and guests joined Mayor Stephanie Rawlings-Blake in honoring the 15 winners of the 2010 Mayor's Business Recognition Awards.

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About Aon

Aon Corporation (NYSE:AON) is the leading global provider of risk management services, insurance and reinsurance brokerage, and human resources consulting and outsourcing. Through its more than 59,000 colleagues worldwide, Aon unites to deliver 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 in over 120 countries. Named the world's best broker by Euromoney magazine's 2008, 2009 and 2010 Insurance Survey, Aon also ranked highest on Business Insurance's listing of the world's 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 revenues in 2007, 2008 and 2009, and Aon was voted best insurance intermediary 2007-2010, best reinsurance intermediary 2006-2010, best captives manager 2009-2010, and best employee benefits consulting firm 2007-2009 by the readers of Business Insurance. Visit http://www.aon.com for more information on Aon and http://www.aon.com/unitedin2010 to learn about Aon's global partnership and shirt sponsorship with Manchester United.

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