CHICAGO, April 23 /PRNewswire-FirstCall/ -- Aon Corporation (NYSE: AOC), the world's leading risk adviser and insurance broker, today announced that Peter Breitstone has been appointed president and chief executive officer of Agency Specialty Product Network (ASPN), effective April 22, 2008. Jerry Tegan, who has served as president and chief executive officer for eight years, will now serve as ASPN chairman.

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Breitstone brings to ASPN more than 25 years of experience as an independent agent. Breitstone, who is an attorney, joined Aon in 2006 when it purchased his environmental risk and insurance brokerage business.

"We're extremely pleased that Peter has agreed to expand his responsibilities to include his new role as chief executive officer of ASPN," said Aon Risk Services president Ted Devine. "Aon has long recognized the value of ASPN as a unique, one of a kind distribution system to the independent agency network. Peter's extensive experience, expertise and relationships in the independent agent and broker marketplace will continue to drive the growth and evolution of the ASPN distribution model, as well as broaden ASPN's offering of innovative products and services."

Said Tegan, "I am excited about Peter's appointment and look forward to working with him to ensure a smooth transition, continued momentum, and further growth and development of the ASPN platform. Peter's appointment is further evidence of Aon's continued investment in ASPN and its leadership in providing resources to the independent agency network."

Said Breitstone, "This is a wonderful opportunity for me. Having been an independent agent for more than 20 years prior to joining Aon, I have personally used the ASPN network to place my specialty business and fully appreciate its value to the insurance community. By expanding the dialogue and embracing technology, the ASPN network can become even more important to the more than 35,000 independent agents and brokers by helping to streamline the process of placing specialty risks with programs and facilities that offer distinctive value to their clients."

Agency Specialty Product Network (ASPN) is a subsidiary of Aon Corporation and operates as a marketing arm for provider companies, including insurance carriers, wholesalers, managing general underwriting and specialty operations. ASPN's goal is to help independent agents and brokers grow, prosper and more effectively meet their clients' needs. Through ASPN, agents can access more than 400 specialized insurance products, programs and services. To access this wide range of products and services, call ASPN at +1.877.ASK.ASPN (+1.877.275.2776) or visit the website at http://www.askaspn.com/.

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 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. Aon also was ranked by A.M. Best as the number one global insurance brokerage in 2007 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. For more information on Aon, log onto http://www.aon.com/.

   Media Contact
   David Prosperi
   312.381.2485
   David_Prosperi@aon.com

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SOURCE: Aon Corporation

CONTACT: David Prosperi of Aon Corporation, +1-312-381-2485,
David_Prosperi@aon.com

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