Aon Receives Perfect Score on Corporate Equality Index

Human Rights Campaign Foundation Recognizes Company’s Commitment to Diverse and Productive Work Environment

CHICAGO (September 17, 2007) – Aon Corporation (NYSE: AOC), today announced it was one of 195 major U.S. businesses to receive a 100 percent rating in the Human Rights Campaign Foundation’s Corporate Equality Index. The Index rates employers on a scale from 0 to 100 on their treatment of gay, lesbian, bisexual and transgender employees, consumers and investors.

“At Aon we have worked hard to ensure that we build and constantly enhance a diverse and productive work environment, and we are thrilled to be recognized for this effort by the Human Rights Campaign,” said Corbette Doyle, Aon’s chief diversity officer. “We are proud to be a leader not only in the insurance and human consulting industries, but in the global business community.”

The Corporate Equality Index rated 519 businesses this year on the extent to which they protected their gay, lesbian, bisexual and transgender employees, consumers and investors. Ratings are based on such factors as nondiscrimination policies, diversity training and benefits for domestic partners and transgender employees. The 195 businesses that met all of the criteria employ more than 8.3 million workers. The complete report, including Aon’s rating, can be found on the Human Rights Campaign website at www.hrc.org/cei.

Aon’s goal for its global diversity initiative is to create a world-class magnet for talent that nurtures the unique background, skills and creativity of the company’s 43,000 colleagues around the world, Since 2006 Aon has launched two global metrics for measuring success on its diversity objectives – more women in senior management positions within the company, and four regionalized diversity strategies – with the objective of embracing the client needs and talent imperatives of each community served by Aon, and to cascade those strategies from the executive level all the way down to the newest employee. Aon’s diversity and inclusion goals focus on continuous improvement by hiring the best, building the best and being the best.

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Aon Corporation
200 E Randolph
Chicago, IL 60601

PRESS CONTACT: Kelly Drinkwine, KemperLesnik Communications -312.755.3537; kelly.drinkwine@kemperlesnik.com

For more information, contact:

Corbette Doyle, Global Diversity Officer, 615-771-8162, corbette_doyle@aon.com

or

David Prosperi, Vice President, Global Public Relations, 312-381-2485, david_prosperi@aon.com

About the Human Rights Campaign
The Human Rights Campaign (www.hrc.org) is America’s largest civil rights organization working to achieve gay, lesbian, bisexual and transgender equality. By inspiring and engaging all Americans, the HRC strives to end discrimination against GLBT citizens and realize a nation that achieves fundamental fairness and equality for all.

About Aon
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 43,000 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.

This press release contains certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from either historical or anticipated results depending on a variety of factors. Potential factors that could impact results include: general economic conditions in different countries in which we do business around the world, changes in global equity and fixed income markets that could affect the return on invested assets, fluctuations in exchange and interest rates that could influence revenue and expense, rating agency actions that could affect our ability to borrow funds, funding of our various pension plans, changes in the competitive environment, our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, our ability to execute the stock repurchase program, changes in commercial property and casualty markets and commercial premium rates that could impact revenues, changes in revenues and earnings due to the elimination of contingent commissions, other uncertainties surrounding a new compensation model, the impact of investigations brought by state attorneys general, state insurance regulators, federal prosecutors, and federal regulators, the impact of class actions and individual lawsuits including client class actions, securities class actions, derivatives actions, and ERISA class actions, the cost of resolution of other contingent liabilities and loss contingencies, and the difference in ultimate paid claims in our underwriting companies from actuarial estimates. Further information concerning the Company and its business, including factors that potentially could materially affect the Company’s financial results, is contained in the Company’s filings with the Securities and Exchange Commission.

This release was published on openPR.