"...The Special Retirement Supplement is a bridge given to FERS employees who retire before the age of 62 when they become eligible for Social Security. This money is provided by the federal government automatically at retirement and is used as supplemental monthly income.
To qualify you must have completed at least 30 years of service with your Minimum Retirement Age or with at least 20 years of service at age 60. Minimum Retirement Age is based on the year that you were born ..."