Improving employment conditions and equity markets have driven the workers’ compensation insurance industry’s performance in recent years. IBISWorld reported that the industry saw 2.1% annual growth from 2013 to 2018. Meanwhile, the National Association of Insurance Commissioners (NAIC) reported that the industry amassed $58 billion in direct written premiums in 2018. The cumulative market share of the 10 largest insurance groups stood at 45.2%.

Here are the top 10 workers’ comp insurance providers, according to NAIC, ranked by countrywide premium and market share:

1. Travelers Direct Written Premiums: $4.3 billion Market Share: 7.4%

2. Hartford Direct Written Premiums: $3.4 billion Market Share: 5.9%

3. Berkshire Hathaway Direct Written Premiums: $2.8 billion Market Share: 4.7%

4. Zurich Insurance Direct Written Premiums: $2.7 billion Market Share: 4.7%

5. AmTrust Financial Services Direct Written Premiums: $2.6 billion Market Share: 4.5%

6. Chubb Ltd Direct Written Premiums: $2.5 billion Market Share: 4.3%

7. Liberty Mutual Direct Written Premiums: $2.5 billion Market Share: 4.3%

8. New York State Insurance Fund Direct Written Premiums: $2.3 billion Market Share: 3.9%

9. AIG Direct Written Premiums: $1.7 billion Market Share: 2.9%

10. Blue Cross Blue Shield of Michigan Direct Written Premiums: $1.6 billion Market Share: 2.7%