See requirements in chapter 296-880 WAC, Unified safety standards for fall protection.
Wash. Admin. Code § 296-307-25015
Statutory Authority: RCW 49.17.040. 98-24-096, § 296-307-25015, filed 12/1/98, effective 3/1/99. 97-09-013, recodified as § 296-307-25015, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. 96-22-048, § 296-306A-25015, filed 10/31/96, effective 12/1/96.