Wash. Rev. Code § 50.13.070
Information or records deemed private and confidential under this chapter shall be available to parties to judicial or formal administrative proceedings only upon a written finding by the presiding officer that the need for the information or records in the proceeding outweighs any reasons for the privacy and confidentiality of the information or records. Information or records deemed private and confidential under this chapter shall not be available in discovery proceedings unless the court in which the action has been filed has made the finding specified above. A judicial or administrative subpoena directed to the employment security department must contain this finding. A subpoena for records or information under this section must be submitted in a manner prescribed by the employment security department. The employment security department may recover costs of responding to subpoenas, consistent with 20 C.F.R. Sec. 603.8 (2012), for proceedings where the employment security department is not a party.
RCW 50.13.070