The Hanover Insurance Group, Inc. is the holding company, which is engaged in the business of property and casualty insurance products and services. The Company operates through four segments: Core Commercial, Specialty, Personal Lines, and Other. Core Commercial product suite provides agents and customers with products designed for small and mid-sized businesses. Core Commercial segment includes Commercial multiple peril, Commercial automobile, Workers’ compensation, and Other core commercial. Specialty segment offers a comprehensive suite of products focused predominately on small to mid-sized businesses. This includes various specialized products that are organized into four distinct divisions: Professional and Executive Lines, Specialty Property & Casualty, Marine, and Surety and Other. Personal Lines segment coverage includes Personal automobile, and Homeowners and other personal lines.