Wausau Insurance wrote its first workers' compensation policy in 1911. Now, the firm has emerged as a national property and casualty company that offers commercial automobile, general liability, workers compensation, property and other insurance coverage plans. In addition, the company provides billing, loss prevention, claims filing, policy status notification, newsletters and customer care services. It has more than $85 billion in assets and employs over 1,500 individuals. The company provides a range of services and products for middle-market companies throughout the United States. It is a member of the Boston-based Liberty Mutual Group, which is a diversified group of insurance companies and maintains nearly 1,000 offices worldwide. Wausau Insurance serves health care, transportation, agricultural, construction and manufacturing sectors. The company maintains an office in Milwaukee.