â–¡ I am a new participant in the County of Riverside 457 Deferred Compensation Plan Note: Only use this form if you have established an account in the Plan. The City provides all benefited employees the opportunity to participate in a Section 457b Deferred Compensation plan.This Agreement is effective as of the next enrollment or change date as provided for in the current Plan Document. This Summary Plan Document (SPD) booklet is a brief description of the 403(b). Tax Sheltered Account (TSA) Plan and program for our school district. You are permitted to defer a portion of your compensation to the Plan. The Plan allows you to designate the deferrals as either. Future benefits from the 457(b) Plan will reflect the amount of a participant's voluntary salary deferral contributions plus earnings. Vesting is immediate. The Emergency Withdrawal Form must be completed and submitted to the deferred compensation provider.