RCW 50.24.160

Except as provided in RCW 50.04.165, any employing unit for which services that do not constitute employment as defined in this title are performed may file with the commissioner a written election that all such services performed by any distinct class or group of individuals or by all individuals in its employment in one or more distinct establishments or places of business shall be deemed to constitute employment for all the purposes of this title for at least two calendar years. Upon the written approval of such election by the commissioner, such services shall be deemed to constitute employment subject to this title on and after the date stated in the approval. Services covered under this section shall cease to be deemed employment as of January 1st of any calendar year subsequent to the two-calendar year period, only if the employing unit files with the commissioner before January 15th of that year a written application for termination of coverage. Services for which an employing unit may elect coverage include, but are not limited to, maritime service as described in RCW 50.04.170.