Aon Corporation Explores Strategic Alternatives for its Warranty, Credit Insurance and Property & Casualty Businesses

CHICAGO, IL – November 15, 2005 – Aon Corporation (NYSE: AOC) is exploring strategic alternatives relating to the ownership of its warranty, credit insurance and property & casualty underwriting businesses.

Greg Case, Aon�s president and CEO, said, �By exploring alternatives, we expect to determine if the potential of our warranty, credit and property & casualty businesses can be more fully realized under different ownership.�

Aon Corporation (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.