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Liberty Mutual Group Schedules Fourth Quarter 2010 Earnings Conference Call

The earnings release, financial results and other supplemental information will be available on the Company's Investor Relations website at www.libertymutual.com/investors prior to the call.

To listen to the call and participate in the Q&A, please dial 800-857-2190, providing the pass code "Liberty" when prompted. A replay will be available until 5:00 p.m. on March 2, 2011 at 800-331-1949.

For further information, please contact Jonathon Jay Grayson, Vice President and Director, Investor Relations, at 617-574-5656 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, is a diversified global insurer and fifth largest property and casualty insurer in the U.S. based on 2009 direct written premium. The Company also ranks 71st on the Fortune 500 list of largest corporations in the United States based on 2009 revenue. As of December 31, 2009, LMG had $109.475 billion in consolidated assets, $94.961 billion in consolidated liabilities and $31.094 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 substantially all of 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 more than 45,000 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.

Liberty Mutual Group
Investor Relations
Jonathon Jay Grayson, 617-574-5656
or
Media Relations
Adrianne Kaufmann, 617-574-5983