No. As long as you are eligible for retiree benefits and fill out the "Authorization for. All questions concerning eligibility, plan coverage and rates should be directed to the Contra Costa County Benefits Office at.Retirees enrolled in a Districtsponsored Medicare plan may be eligible for reimbursement of Medicare. Staff at EHSD can enroll customers into a health care program, including Medi-Cal or subsidized health coverage plans. The U.S. Social Security Administration. CCSLS is a non-profit organization dedicated to providing free civil legal services to Contra Costa County residents who are 60 or older. An employee's service retirement benefits become vested upon: 1. The California Public Employees' Retirement System (CalPERS) provides retirement and health benefits for both active and retired California Public Employees. You have a savings or retirement account. They also provide important protection for you and your family in the case of illness or injury.