NEW YORK, July 29 /PRNewswire-FirstCall/ -- Aon Risk Services, the world's largest risk management and consulting firm and a unit of Aon Corporation (NYSE: AOC), announced the appointments of Warren Mula to the position of chairman and Eric Andersen to chief executive officer of its U.S. Retail organization.

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"For many years, Warren and Eric have demonstrated extraordinary leadership, insight and value to our clients and to our colleagues," said Steve McGill, chairman and chief executive officer of Aon Risk Services. "They work extremely well as a leadership team and have the right focus in serving clients and working with the insurance markets."

Mula, a 28-year veteran of Aon, will continue to lead Aon Brokerage Group, which manages national industry practices and brokerage operations in the United States. His principal responsibility is to ensure Aon's readiness to deliver industry-specific expertise to its clients around the country.

Prior to his appointment as chairman, Mula served as executive vice president and managing principal of national service management.

As chief executive officer, Andersen maintains direct responsibility for the operations of Aon Risk Services' network of more than 50 local offices in the United States, ensuring operational excellence in the delivery of products and services to clients. Prior to his appointment as chief executive officer, Andersen was the U.S. Retail field leader and chief executive officer of Aon Global Americas, responsible for service delivery to Aon's largest global clients. He has worked in insurance brokerage for more than 20 years, including several years in the Lloyd's marketplace.

Both will continue to be based in New York.

"Aon's clients will be well-served by Warren's and Eric's continued focus on delivering value and performance," said Ted Devine, president of Aon Risk Services. "They are each the embodiment of leadership and focus on delivering customized solutions and innovative services to our clients."

About Aon

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 was ranked as the world's largest insurance broker based on brokerage revenues by Business Insurance. 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 Contact

Rahsaan Johnson, 312.381.2684, Rahsaan_Johnson@aon.com

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SOURCE: Aon Corporation

CONTACT: Rahsaan Johnson of Aon Corporation, +1-312-381-2684,
Rahsaan_Johnson@aon.com

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