CHICAGO, Nov. 20 /PRNewswire-FirstCall/ -- Aon Consulting, the global human capital consulting organization of Aon Corporation (NYSE: AOC), announced today that Barry Greenstein has joined the firm as senior vice president in its Corporate Transactions group, which focuses on mergers, acquisitions, divestitures and restructuring.

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

Greenstein will focus on serving Aon's private equity clients, with particular emphasis on due diligence and post-close portfolio services. Prior to joining Aon Consulting, Greenstein served as a senior actuary and principal in Mercer's New York office where he worked with private equity clients. He has more than 20 years of experience in human capital consulting, with the past 10 years exclusively devoted to corporate transactions, including mergers, acquisitions, divestitures, joint ventures, and bankruptcies. He is an expert in benefits and compensation due diligence in the areas of pension plans, health and welfare programs, retiree medical, multiemployer plans, Financial Accounting Standards (FAS), supplemental executive benefits, cash or deferred arrangements, and analysis of legislative and regulatory changes in the funding and qualification arena.

"Barry brings a sharp business acumen and financial focus to the transaction process," said Mark Arian, executive vice president and leader of the Aon Consulting Corporate Transactions group. "He has significant experience in the benefits arena, working with clients of all sizes, industries and complexities. I'm confident he will bring tremendous value to our private equity clients worldwide."

Greenstein earned a Bachelor of Science in mathematics from the State University of New York at Albany. He is an associate of the Society of Actuaries, an Enrolled Actuary, and a member of the American Academy of Actuaries.

Greenstein joined Aon Consulting on Nov. 17, and is based in New York City. He reports to Arian.

Aon Consulting's Corporate Transactions group helps clients shape strategies in the areas of organization, benefits and talent, as employers work through restructuring, mergers, acquisitions and divestitures.

About Aon Consulting

Aon Consulting Worldwide is among the top global human capital consulting firms, with 2007 revenues of $1.352 billion and more than 6,000 professionals in 117 offices worldwide. Aon Consulting is shaping the workplace of the future through 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. For more information on Aon, please visit http://aon.mediaroom.com/.

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 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 ranked highest on the Business Insurance ranking of the world's largest insurance brokers based on commercial retail, wholesale, reinsurance and personal lines brokerage revenues. 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 and 2008 by the readers of Business Insurance. Sign up to receive Aon news alerts by email or RSS feed at: http://aon.mediaroom.com/index.php?s=58.

   Media Contact:
   Joe Micucci
   312-381-4786
   joe_micucci@aon.com

Photo: http://www.newscom.com/cgi-bin/prnh/20041215/CGW049LOGO
AP Archive: http://photoarchive.ap.org/
PRN Photo Desk, photodesk@prnewswire.com

SOURCE: Aon Corporation

CONTACT: Joe Micucci of Aon Corporation, +1-312-381-4786,
joe_micucci@aon.com

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