Aon Consulting Announces New Hire with Global Benefits Practice

Dany Mathieu to serve clients as vice president and international consultant

SAN FRANCISCO, May 19 /PRNewswire-FirstCall/ -- Aon Consulting Worldwide, the
global human capital consulting organization of Aon Corporation (NYSE: AOC),
today announced that Dany Mathieu has joined the Global Benefits practice as
vice president, serving clients based in the Americas.

(Logo: http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO)

Mathieu brings more than 18 years of experience in employee benefits
consulting to Aon Consulting. He will serve as international consultant,
providing advice on a range of international human resources issues such as
global benefits governance, global benefits management, mergers and
acquisitions, multinational pooling, international transfer and employee
mobility consulting, and benefit inventory. Prior to joining Aon, Mathieu
served as an international consultant with Mercer, where he provided a similar
range of consulting services.

"Now more than ever, organizations are looking for ways to control costs in
their global operations, and Dany's experience, leadership, and track record
of success will be invaluable as we continue to develop the best solutions to
meet our clients' needs," said Piyush Chaudhari, Aon Consulting's Global
Benefits practice leader.

Mathieu earned a Bachelor of Science degree in actuarial mathematics from
Concordia University, Montreal, Quebec, and a Juris Doctor from the Faculty of
Law, University of Toronto. He is a Fellow of the Society of Actuaries.

Mathieu is based in San Francisco.

About Aon Consulting
Aon Consulting Worldwide is among the top global human capital consulting
firms, with 2008 revenues of $1.358 billion and more than 6,300 professionals
in 117 offices worldwide. Aon Consulting works with organizations to improve
business performance and shape the workplace of the future through employee
benefits, talent management and rewards strategies and solutions. Aon
Consulting was named the best employee benefit consulting firm by the readers
of Business Insurance magazine in 2006, 2007 and 2008.

About Aon
Aon Corporation (NYSE: AOC) is the leading global provider of risk management
services, insurance and reinsurance brokerage, and human capital consulting.
Through its more than 37,000 colleagues worldwide, Aon readily delivers
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 through more than 500 offices in
more than 120 countries. Named the world's best broker by Euromoney magazine's
2008 and 2009 Insurance Survey, Aon also ranked highest on Business
Insurance's listing of the world's largest insurance brokers based on
commercial retail, wholesale, reinsurance and personal lines brokerage
revenues in 2008. A.M. Best deemed Aon the number one insurance broker based
on brokerage revenues in 2007 and 2008, and Aon was voted best insurance
intermediary, best reinsurance intermediary and best employee benefits
consulting firm in 2007 and 2008 by the readers of Business Insurance. For
more information on Aon, log onto http://www.aon.com/.

Media Contact:
Sara Carlson
312.381.5045
Sara_carlson@aon.com

SOURCE Aon Corporation

Sara Carlson of Aon Corporation, +1-312-381-5045, Sara_carlson@aon.com