WORCESTER, Mass., July 9, 2025 /PRNewswire/ --  The Hanover Insurance Group, Inc. (NYSE: THG) announced today it has enhanced its workers' compensation onboarding program, reinforcing its commitment to delivering exceptional customer experiences and differentiated service for mid-sized commercial clients.All new workers' compensation policyholders and the majority of renewals with premiums over $100,000 now have access to expanded benefits, including a dedicated claims liaison and access to a self-service c ...