Maximum service for pension is 40 years, or; 480 months. The Retirement Quick Guide will walk you through what to expect as your retirement application is processed and your benefits are determined.At your employer's request, we offer these presentations designed for members within five years of retirement eligibility. FERS is a retirement plan that provides benefits from three different sources: a Basic Benefit Plan, Social Security and the Thrift Savings Plan (TSP). The employee must complete a Nassau County Health Insurance Transaction Form to assure continuous health insurance coverage. Before you retire, ask your HBA to complete Form PS-410, NYSHIP Sick Leave Credit Preservation. Keep this form with your important papers. Employees who separate from the County, i.e. A new law (Chapter 18 of the Laws of 2012) was enacted amending the retirement benefits of public employees who established membership in a public employee. Your earnings may be regulated if you return to work after retiring from the NYS Retirement System.