Want to know how to write a retirement letter of resignation? Get the insights you need and free retirement letter template to help guide the way.Termination of your membership in CCCERA can occur for a variety of reasons, but usually this means you no longer work for an employer participating in CCCERA. In the opening paragraph, make it clear that you are retiring. A. Cover letter explaining your retirement benefit options and providing instructions on completing your retirement forms. b. In the opening paragraph, make it clear that you are retiring. Insurance through a joint powers arrangement with Contra Costa County school districts. For the June 10, 2015 payment: The employee must be employed by. Update: The Supervisors have made it a practice to encourage grand jury service at public events. Retirement from OCERS may be subject to an offset of their retirement allowance.