Wash. Admin. Code § 296-900-16010
(2) The employer must keep the notices posted until one of the following occur:
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060, 49.17.180, 49.17.190, and chapter 49.17 RCW. WSR 25-03-091, s 296-900-16010, filed 1/16/25, effective 2/17/25. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 17-18-075, § 296-900-16010, filed 9/5/17, effective 10/6/17; WSR 06-06-020, § 296-900-16010, filed 2/21/06, effective 6/1/06.]