The U.S. Postal Service has started sending out offers of early retirement, starting with about 3,000 employees in headquarters, and eventually possibly reaching to a much higher number, including clerks, mail handlers and initial-level supervisory positions. Early retirement allows employees to go out at any age with 25 years of service or at age 50 with 20. However, employees under CSRS are subject to a 2 percent annuity reduction for each year they are under age 55. The postal service is not coupling the early retirement offer with buyout offers.