Public employees who are members of a Massachusetts public retirement system can qualify for a retirement benefit once they meet certain requirements. Find out how Massachusetts treats government and nongovernment pensions, contributions, and rollovers for tax purposes.Use this calculator to help you create a retirement plan based on your age now and at retirement, income, savings, retirement savings and more. Apply for your monthly retirement benefit any time between age 62 and 70. Many states have enacted state-sponsored retirement programs. Learn how these plans can help you open doors. The Commonwealth offers two distinct types of retirement plans for certain employees of its institutions of public higher education. Commonwealth's 403(b) Plan gives participants the opportunity to supplement your core retirement benefits. The Plan supplements benefits of the state's retirement plans. Pension benefits and.