Employees of Washington state and political subdivisions who offer the DCP program are eligible to participate in DCP. Enrolling as a new customer is easy!A 457(b) plan is a tax-deferred retirement savings plan. Funds are withdrawn from an employee's income without being taxed and are only taxed upon withdrawal. The 457(b) Deferred Compensation Plan is one piece of your retirement program designed to supplement your retirement savings. Deferred compensation is a financial arrangement where employees can elect to receive a portion of their income at a later date, typically during retirement. Any type of plan, arrangement or agreement that provides for the deferral of compensation, regardless of the number of persons covered. 2.