Top 10 Writers Of Workers' Compensation Insurance By Direct Premiums Written, 2018

($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Travelers  $4,280,547 7.5%
2 The Hartford 3,382,642 5.9
3 Zurich  2,687,437 4.7
4 AmTrust Financial 2,635,106 4.6
5 Liberty Mutual  2,473,711 4.3
6 Chubb  2,418,702 4.2
7 Berkshire Hathaway Inc.  2,310,903 4.0
8 State Ins Fund Workers' Comp (NY) 2,256,138 3.9
9 AF Group  1,566,915 2.7
10 Old Republic Insurance  1,465,319 2.6
(1) Before reinsurance transactions, includes some state funds. (2) Based on U.S. total, includes territories. Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.