Bolger will leave the company after appointment of successor

Aon Corporation said David P. Bolger, executive vice president, chief financial officer and chief administrative officer, will leave the company after the appointment of his successor.

Bolger will remain with Aon for a period of time following the appointment of his successor in order to ensure an orderly transition. The company has started a search for a new CFO.

Patrick G. Ryan, executive chairman of the board of directors of Aon, commented: "I am pleased to have brought Dave to Aon in early 2003 as part of my effort to enhance our senior executive team. Dave's performance has exceeded my highest expectations. He has earned the respect of Aon colleagues and shareholders, and the Company is much stronger for his time here."

Gregory C. Case, president and chief executive officer of Aon, added: "Dave has been central to the success Aon has achieved in recent years. He has brought passion, professionalism, integrity and extraordinary talent to the Company. We wish Dave well in his future endeavors."

Bolger commente: "I am very proud of what we have been able to accomplish over the past four and one-half years. During a time of great challenge in our industry, Aon has thrived and grown, and the Company is extraordinarily well-positioned for the future. I would like to thank my friends and colleagues at Aon for their dedication and hard work."

Bolger joined Aon in January 2003.