Aon Risk Services of Ohio Acquires Sam D. Pipino Agency

11 October 2005

Aon (NYSE: AOC) announced
today that Aon Risk Services of Ohio has acquired Sam D. Pipino Agency, a risk
specialist for the real estate development and construction industries. Sam D.
Pipino Agency has 12 employees who work in the company's offices in Youngstown
and Cleveland. Terms of the deal were not disclosed.
(Logo: http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO )
Jerry Kysela, resident managing director, Aon Risk Services of Ohio said:
"Sam D. Pipino Agency is well known throughout northern Ohio as a leader in
real estate and construction risk services. For the past 18 months Aon has
enjoyed incredible growth in Cleveland and across northern Ohio. This
acquisition complements our organic growth strategy, bolsters one of our core
strengths and further demonstrates our commitment to the northern Ohio
business community."
As a result of the acquisition, Sam D. Pipino Agency's Youngstown office
will remain open, while the company's Cleveland office will merge with the Aon
Risk Services of Ohio office in Cleveland. Additionally, Sam D. Pipino,
principal, Sam D. Pipino Agency, will join the Aon Risk Services of Ohio
staff.
Said Pipino: "Aon Risk Services of Ohio is recognized throughout the state
as a trusted partner and leading expert in risk management. Our agency has
always respected the integrity and honesty with which Aon Risk Services
conducts its business. I am confident this acquisition will benefit all
parties involved and enable our combined workforce to provide Ohio businesses
with the best possible risk management services."

About Aon
Aon Corporation ( http://www.aon.com ) is a leading provider of risk
management services, insurance and reinsurance brokerage, human capital and
management consulting, and specialty insurance underwriting. There are 47,000
employees working in Aon's 500 offices in more than 120 countries. Backed by
broad resources, industry knowledge and technical expertise, Aon professionals
help a wide range of clients develop effective risk management and workforce
productivity solutions.

For more information, contact:
Thaddeus Woosley, 312.381.2446, Thaddeus_Woosley@aon.com

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