Overtime and FERS don’t necessarily go together the way you might expect. You can work a year filled with extra shifts and overtime, see your total earnings jump, and still have none of that extra pay increase the salary used to calculate your FERS pension. But there’s a second retirement benefit where that overtime may matter.
FERS Doesn’t Count Your Overtime
Your FERS pension is based on your high-3 average salary, generally the average of your highest three consecutive years of basic pay.
Overtime, bonuses, awards and most other premium pay generally aren’t included in that calculation. So a year of heavy overtime can produce a much bigger paycheck without changing your high-3 at all.
That’s the key point about overtime and FERS: more money on your W-2 doesn’t automatically mean a larger federal pension.
But Social Security Plays by Different Rules
Social Security uses your covered earnings instead.
Your retirement benefit is based on your highest 35 years of indexed earnings. If overtime makes one year of earnings high enough to replace a lower-earning year in your record, it can potentially increase your future Social Security benefit.
There’s a ceiling, though. In 2026, Social Security only counts earnings up to $184,500. If your regular pay already puts you near that amount, additional overtime may not increase your Social Security benefit.
So the same overtime can have two very different outcomes: nothing for your FERS high-3, but potentially something for Social Security.
What About Special-Category Employees?
Qualifying law enforcement officers, firefighters, air traffic controllers and some other federal employees have a different FERS formula, generally 1.7% of the high-3 for their first 20 years of qualifying service.
That changes how your pension is calculated, but it doesn’t generally make overtime part of your high-3.
Did Your Overtime Help?
Check your year-by-year earnings record through your Social Security account and compare it with the basic pay being used for your FERS estimate.
Your overtime may not have changed your pension, but it could still have strengthened your Social Security record.
Your Retirement Benefits Don’t All Follow the Same Rules
FERS and Social Security are only two pieces of your retirement income. Schedule a complimentary benefits review with a Federal Retirement Consultant (FRC®) who can help you understand how your pension, Social Security, and TSP work together.
