Aon Names Lester B. Knight as non-Executive Chairman

23/07/2008 11:15

AON Groep Nederland BV

Aon Names Lester B. Knight as non-Executive Chairman

CHICAGO, July 18 -- Lester B. Knight, an independent

director since 1999, has been elected non-Executive Chairman of the Board of

Aon Corporation (NYSE: AOC). Knight, 50, succeeds Patrick G. Ryan, Aon's

Executive Chairman and founder, who previously announced his intention to

retire on August 1, 2008. Aon is the world's largest insurance and

reinsurance intermediary, and a global leader in human capital consulting.

Knight is a founding and managing partner of RoundTable Healthcare Partners,

a healthcare-focused private equity investment firm. Prior to RoundTable, he

was the Chairman and CEO of Allegiance Corporation. In addition, Knight

serves as a Trustee of Northwestern University, and as a director of Evanston

Northwestern Healthcare and Junior Achievement of Chicago.

Andy McKenna, Aon's lead director and chair of the ad hoc Nominating

Committee, commented, "Aon's choice of an independent non-Executive Chairman

is consistent with best governance practices of leading global firms. The

Aon family and our shareholders should be confident in Lester's ability to

sustain the independent oversight of their interests."

Ryan noted, "As I have remarked many times since announcing my retirement

earlier this year, Aon is extremely well-positioned for growth and success

under the leadership of Greg Case and his management team. Our Board has

never been more excited about the future of Aon. Lester is a wonderful

choice and will ensure continued close collaboration between the Board and

management."

Knight said, "I am gratified to serve Aon's shareholders in a new capacity

and want to thank Pat, Andy and the Board for honoring me with this

opportunity. I look forward to working with the Board, Greg and the

management team to ensure Aon continues to strengthen and extend its position

of global market leadership."

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 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. Aon also was ranked

by A.M. Best as the number one global insurance brokerage in 2007 and 2008

based on brokerage revenues, and voted best insurance intermediary, best

reinsurance intermediary, and best employee benefits consulting firm in 2007

by the readers of Business Insurance.





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