Liberty Mutual Group Dial-In Details for First Quarter Earnings Conference Call

Business Wire, April 28, 2008

BOSTON -- Liberty Mutual Group ("LMG") is scheduled to review its first quarter 2008 financial results on May 5, 2008. At 10:00 a.m. EDT that day, Edmund F. Kelly, Liberty Mutual Group Chairman, President and CEO, will host the conference call to discuss the company's financial results.

The news release, financial results and other supplemental financial information will be available prior to the call on the company's Investor Relations website at www.libertymutual.com/investors.> To listen to the call and participate in the Q&A, please dial 888-713-4541 fifteen minutes before the starting time using conference ID number 3794358. A replay will be available until May 12, 2008 at 888-203-1112 using the reservation number 3794358.

For further information, please contact Matthew T. Coyle, Vice President and Director of Investor Relations, at 617-654-3331 or email investor_relations@libertymutual.com.

About the Company

Boston-based Liberty Mutual Holding Company Inc., the parent corporation of the Liberty Mutual Group of entities ("LMG" or the "Company"), is a diversified global insurer and sixth largest property and casualty insurer in the U.S. based on 2007 direct written premium. The Company also ranks 94th on the Fortune 500 list of largest corporations in the United States based on 2007 revenue. As of December 31, 2007, LMG had $94.679 billion in consolidated assets, $82.313 billion in consolidated liabilities and $25.961 billion in annual consolidated revenue.

LMG, through its subsidiaries and affiliated companies, offers a wide range of property-casualty insurance products and services to individuals and businesses alike. In 2001 and 2002, the Company formed a mutual holding company structure, whereby the three principal mutual insurance companies, Liberty Mutual Insurance Company, Liberty Mutual Fire Insurance Company and Employers Insurance Company of Wausau, each became separate stock insurance companies under the ownership of Liberty Mutual Holding Company Inc.

Functionally, the Company conducts its business through four strategic business units: Personal Markets, Commercial Markets, Agency Markets and International. Each business unit operates independently of the others and has dedicated sales, underwriting, claims, actuarial, financial and certain information technology resources. Management believes this structure allows each business unit to execute its business strategy and/or to make acquisitions without impacting or disrupting the operations of the Company's other business units.

LMG employs over 41,000 people in more than 900 offices throughout the world. For a full description of the Company's business operations, products and distribution channels, please visit Liberty Mutual's Investor Relations web site at www.libertymutual.com/investors.>

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