The Washington 31.1 Request for Review Form is a document used to request a review of a claim for benefits. It is used by claimants in the state of Washington to request a review of a denied or underpaid claim for unemployment, workers' compensation, or medical benefits. The form is available from the Employment Security Department of Washington State and must be filled out with the required information and filed in a timely manner. There are three types of Washington 31.1 Request for Review Form: the Claimant's Request for Review, the Employer's Request for Review, and the Medical Provider's Request for Review. Each form requests different types of information depending on the nature of the claim and must be completed in full and signed before being submitted.