With the rule of 55, you may be able to access and take 401(k) withdrawals early. The early retirement benefit equals 42 percent of your FAS for 20 years of service credit plus an additional 4 percent of your FAS for each year of service.This booklet helps you understand your plan and explains what information you should review periodically and where to go for help with questions. In 2025, you retire early and go back to work before reaching your FRA. Complete, sign, date, and return this form at least two weeks before your last day of work to the address below. For exam ple, the total could be reduced if you elect to retire at the minimum retire ment age before completing 30 years of service. If you are retired, please go to the Retiree and Beneficiary Forms section. Retirement Online now offers more services and time-saving features. Keep in mind that if you withdraw from or cash out your 401(k) or IRA before age 59½, you will usually pay an early withdrawal penalty. The Federal Employees Retirement System (FERS) covers most new, non-temporary employees hired on or after January 1, 1984.