Liberty Mutual Insurance Schedules Third Quarter 2012 Earnings Conference Call

Liberty Mutual Holding Company Inc., the parent corporation of the Liberty Mutual Insurance group of entities (the’’Company’’), is scheduled to review its third quarter financial results on October 30, 2012. At 11:00 a.m. EDT that day, David Long, Liberty Mutual Insurance President and CEO, will host a conference call to discuss the Company’s financial results.

The earnings release, financial results and other supplemental information will be available on the website 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 November 6, 2012 at 866-351-2782.

For further information, please contact Alison Erbig, Vice President and Director, Investor Relations, or email investor_relations@libertymutual.com.

About Liberty Mutual Insurance

’’Helping people live safer, more secure lives’’ since 1912, Boston-based Liberty Mutual Insurance is a diversified global insurer and the third largest property and casualty insurer in the U.S. based on 2011 direct premiums written as reported by the National Association of Insurance Commissioners.

Liberty Mutual Insurance also ranks 84th on the Fortune 100 list of largest corporations in the U.S. based on 2011 revenue. As of December 31, 2011, Liberty Mutual Insurance had $117.1 billion in consolidated assets, $99.3 billion in consolidated liabilities, and $34.7 billion in annual consolidated revenue.

Liberty Mutual Insurance offers a wide range of insurance products and services, including personal automobile, homeowners, workers compensation, property, commercial automobile, general liability, global specialty, group disability, reinsurance and surety. Liberty Mutual Insurance employs over 45,000 people in more than 900 offices throughout the world.