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NEW YORK, March 3, 2008 — Marsh & McLennan Companies, Inc. (MMC) today announced that Mathis Cabiallavetta, Vice Chairman, Office of the CEO of MMC, will be retiring from his position effective September 1, at which time he will join the Board of Directors of Swiss Re. Mr. Cabiallavetta will continue to serve MMC as Chairman of its International Advisory Board.

“Mathis has made an invaluable contribution to MMC during his nine and a half years with us, and we greatly appreciate all he has done to help MMC, particularly internationally,” said Brian Duperreault, President and CEO of MMC. “We congratulate him on his appointment to the Swiss Re Board, and are especially pleased that we will continue to benefit from his insight and experience as he leads our International Advisory Board.”

Mr. Cabiallavetta, age 63, joined MMC in 1999. Previously he was Chairman of the Board of UBS AG, which he joined in 1971. He is a member of the Boards of Directors of Altria Group, Inc. and BlackRock, Inc. Mr. Cabiallavetta is also a member of the Advisory Board of General Atlantic Partners in New York.

MMC is a global professional services firm providing advice and solutions in the areas of risk, strategy and human capital. It is the parent company of a number of the world’s leading risk experts and specialty consultants, including Marsh, the insurance broker and risk advisor; Guy Carpenter, the risk and reinsurance specialist; Mercer, the provider of HR and related financial advice and services; Oliver Wyman, the management consultancy; and Kroll, the risk consulting firm. With more than 56,000 employees worldwide and annual revenue exceeding $11 billion, MMC provides analysis, advice and transactional capabilities to clients in more than 100 countries. Its stock (ticker symbol: MMC) is listed on the New York, Chicago, and London stock exchanges. MMC's website address is www.mmc.com.