The department uses performance adjustment to ensure equity between employers that participate in retrospective rating and employers that do not. The goal of performance adjustment is to make sure that overall, after adjustments, retro participants pay the same share of their losses as employers that do not participate in retro.
Wash. Admin. Code § 296-17B-600
Statutory Authority: RCW 51.16.035, 51.16.100, 51.04.020(1), and 51.18.010. 10-21-086, § 296-17B-600, filed 10/19/10, effective 11/19/10.