Wash. Admin. Code § 284-20B-080
If a member or subscribing insurer has not authorized a bureau to file forms on its behalf, the insurer must make a filing with the commissioner to use bureau forms.
(1) If the forms are identical to the bureau forms, the filing must include this information:
[Statutory Authority: RCW 48.02.060, 48.110.150. WSR 08-21-091 (Matter No. 2007-11), § 284-20B-080, filed 10/15/08, effective 2/1/09.]