Aon Corporation and Jauch & Hubener KGaA Join Forces.

CHICAGO--(BUSINESS WIRE)--September 18, 1997--Aon Corporation (Aon) today announced that it has entered into an agreement to acquire Jauch & Hubener KGaA, subject to regulatory approvals and other normal consents. The existing activities of Jauch & Hubener KGaA and the brokerage and consulting operations of Aon in Germany, Austria, Switzerland and certain countries in Central Europe will be combined under a new company to be known as Aon Jauch & Hubener.

Jauch & Hubener KGaA and Aon have chosen to join up with each other because they share the same commercial philosophy. They both place particular importance on entrepreneurism in all aspects of business and on interdependence, which encourages resource sharing as part of a global teamwork for the benefit of clients.

Aon's German brokerage and consulting subsidiary, Aon GmbH, has about 450 employees and had revenues in 1996 of $47 million (DM 85 million). It already ranks no. 4 in the German market. Jauch & Hubener KGaA ranks no. 1 in Germany. Together, the new Aon Jauch & Hubener company will have total annual revenues of about $225 million (DM 400 million) and 1,800 employees, ranking clearly as Germany's premier insurance brokerage and consulting firm.

Patrick G. Ryan, Chairman and CEO of Aon Corporation said, "We are very pleased to have been able to bring together our already strong operations in Germany and Central Europe with those of Jauch & Hubener. This new enterprise will provide superb service for all our mutual clients and wider career horizons for executives and staff who have formerly worked with Aon and Jauch & Hubener. This combination further advances Aon's long term strategy in a most significant way. The new joint enterprise positions us ideally as we now plan together for the development of our business in Europe into the next century."

Christian Dahms, speaker for the partners of the Jauch & Hubener KGaA, said, "We at Jauch & Hubener KGaA are very happy to have had the opportunity to join up with the world's leading brokerage organization, Aon, because this combination expands the range of services for our clients and creates new opportunities for our senior people and other staff. I know Pat Ryan, the Chairman of Aon, and the senior people in Germany, Wolff Thurnagel and Peter Wesselhoeft. I hold all these people in very high regard and know we can all work easily and well together."

Aon Corporation is an insurance services holding company that comprises a family of insurance brokerage, consulting and consumer insurance companies. Brokerage and consulting services are provided through 550 offices in more than 100 countries. Aon's common stock (Symbol AOC) is listed on the New York, Chicago and London stock exchanges.

CONTACT: Aon Corporation

John F. Roskopf

312/701-3983