TOP TEN WRITERS OF WORKERS' COMPENSATION INSURANCE BY DIRECT PREMIUMS WRITTEN, 2010

($000)

Rank Group Direct premiums written (1) Market share
1 Liberty Mutual Holding Co. $4,073,004 10.3%
2 American International Group 3,592,682 9.1
3 Travelers Companies 2,817,806 7.1
4 Hartford Financial Services 2,643,721 6.7
5 Zurich Financial Services Ltd. 2,424,356 6.1
6 State Insurance Fund Workers' Comp 1,309,759 3.3
7 State Compensation Insurance Fund 1,140,203 2.9
8 ACE Ltd.  1,065,645 2.7
9 Old Republic International 851,728 2.2
10 CNA Financial Corp. 845,171 2.1

(1) Before reinsurance transactions. Includes some state funds.

Source: SNL Financial LC.