Wash. Admin. Code § 296-63-005
Fees shall only be assessed to employers engaged in business operations in the following industries, as classified by the current industry classification system used by the bureau of labor statistics:
[Statutory Authority: Chapters 49.17 and 49.70 RCW and 2016 c 168. WSR 16-13-120, § 296-63-005, filed 6/21/16, effective 7/22/16. Statutory Authority: RCW 49.17.040 and 49.17.050. WSR 86-23-003 (Order 86-38), § 296-63-005, filed 11/6/86.]