Washington Revised Code Title 50. Unemployment Compensation § 50.20.150. Notice of application or claim

The applicant for initial determination, his or her most recent employing unit as stated by the applicant, and any other interested party which the commissioner by regulation prescribes, shall, if not previously notified within the same continuous period of unemployment, be given notice promptly in writing that an application for initial determination has been filed and such notice shall contain the reasons given by the applicant for his or her last separation from work. If, during his or her benefit year, the applicant becomes unemployed after having accepted subsequent work, and reports for the purpose of reestablishing his or her eligibility for benefits, a similar notice shall be given promptly to his or her then most recent employing unit as stated by him or her, or to any other interested party which the commissioner by regulation prescribes.

Each base year employer shall be promptly notified of the filing of any application for initial determination which may result in a charge to his or her account.