Bermuda Stock Exchange

BSX Shorts April 2008 Edition

ACE Completes Acquisition Of Combined Insurance Company Of America

HAMILTON, Bermuda--(BUSINESS WIRE)--April 1, 2008--ACE Limited(NYSE:ACE) announced today that it has completed its acquisition of100% of the outstanding shares of Combined Insurance Company of America and certain of its subsidiaries from Aon Corporation (NYSE:AOC) for $2.56 billion in cash. In accordance with the purchase agreement, the purchase price reflects on a dollar-for-dollar basis an increase to Combined's net worth that occurred between the signing and the closing of the transaction.

Evan G. Greenberg, Chairman and Chief Executive Officer of ACE Limited, commented: "We are delighted to close this important transaction ahead of schedule. ACE and Combined teams have been working closely together, making plans to achieve both our efficiency and growth objectives. We have been building considerable momentum over the last three months so we can hit the ground running beginning today."

In connection with ACE's first quarter earnings call on April 30, the Company will update 2008 earnings guidance. The ACE Group of Companies is a global leader in insurance and reinsurance serving a diverse group of clients. Headed by ACE Limited, a component of the Standard & Poor's 500 stock index, the ACE Group of Companies conducts its business on a worldwide basis with operating ubsidiaries in more than 50 countries.

Additional information can be found at: www.acelimited.com.

CONTACT: ACE Limited, Hamilton

Investor Contact:

Helen M. Wilson, 441-299-9283

helen.wilson@ace.bm

Media Contact:

Patrick McGovern, 212-827-4426

patrick.mcgovern@ace-ina.com

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