In the ever-evolving landscape of workers’ compensation insurance, a recent report has highlighted the top players in the industry based on market share. Published on July 2, 2025, by Mav Rodriguez, the article provides a detailed look at the ten largest workers’ comp insurance companies in the United States, showcasing their market shares and unique offerings.
Travelers Group leads the pack with a market share of 8.51%, boasting over $3.8 billion in direct premiums written. Known for its technology investments, Travelers provides brokers with tools that help reduce costs and improve claim outcomes. Their offerings include comprehensive medical and indemnity coverage, pay-as-you-go billing, and advanced analytics for risk management.
Following closely is The Hartford Fire & Casualty Group, holding a 5.97% market share. The Hartford is recognized for its strong partnerships with brokers and a claims-first approach, which includes nurse triage services and scalable risk control. Their focus on small and mid-sized businesses has made them a reliable choice in the market.
Zurich Insurance Group comes in third with a market share of 5.16%. With over a century of experience, Zurich is known for its customizable programs and proactive claims handling, making it a solid option for brokers managing complex accounts.
AmTrust Financial Services Group ranks fourth with a 4.51% market share. This company primarily serves small to mid-market businesses and emphasizes efficient claims handling and technology-driven support.
Chubb Limited Group follows with a 4.24% share, leveraging its global presence to provide advanced medical management services aimed at controlling costs and streamlining claims.
Berkshire Hathaway Group, with a 3.75% market share, is noted for its strong risk infrastructure and disciplined underwriting, catering primarily to mid-to-large employers.
Blue Cross Blue Shield of Michigan Group holds a 3.39% market share, benefiting from its acquisition of Accident Fund, which enhances its expertise in niche markets.
American Financial Group, best known for its Great American Insurance brand, has a 3.02% market share and is recognized for its disciplined underwriting and strong profitability.
Old Republic Group, with a market share of 2.98%, is valued for its presence in residual markets and specialized sectors like aviation and trucking.
Finally, American International Group (AIG), with a 2.84% market share, leverages its global footprint and financial stability to support brokers in managing complex risks.
The report emphasizes the importance of market share in workers’ compensation insurance. Larger carriers often provide faster claims processing and broader coverage options, which can lead to better outcomes for clients. Many of these top companies invest in medical cost containment tools and digital platforms, enhancing their service offerings.
For brokers, understanding these dynamics is crucial. The right insurance partner can significantly impact a client’s experience, especially when managing claims and ensuring employee safety. As the industry continues to change, staying informed about these leading companies and their offerings will be essential for brokers looking to provide the best service to their clients.