Established in 1912, Liberty Mutual Group is committed to providing insurance products and services. As a provider of personal coverage, the firm, through its various companies, offers a full line of products, including auto, home and life as well as personal liability. Liberty Mutual Group offers business coverage-related products ranging from commercial property, specialty risk to workers compensation. The company has earned an A (Excellent) rating from A.M. Best Co. It is one of the largest property and casualty insurers in the United States based on net written premium.