Unused sick leave to service credit: the 2,087-hour rule
There’s a quiet line item on your leave-and-earnings statement that turns into real pension money the day you retire — and most federal employees badly underestimate it. Unused sick leave can’t be cashed out, but it is converted to extra creditable service that permanently raises your FERS or CSRS annuity, indexed to COLAs for the rest of your life. Here’s exactly how the conversion works, the two limits that trip people up, the “full-month trap” that can quietly cost you, and a calculator that shows what your balance is worth.
1. The benefit hiding in your balance
Annual leave and sick leave get treated very differently at retirement, and the difference catches people off guard. Your unused annual leave is paid out as a lump-sum check — nice, but taxable and one-time. Your unused sick leave can’t be cashed out at all. Instead, it’s converted into additional creditable service that’s folded into your annuity formula — a permanent, COLA-protected raise that pays for the rest of your life.
That makes saved sick leave one of the most undervalued assets a federal employee owns. A large balance can add months or even years to your computed service, and because the increase compounds across a multi-decade retirement and rises with COLAs, its lifetime value routinely runs into five figures. The catch is that it only counts if you still have it on your retirement date — which is why understanding the rules before you plan your exit matters so much.
2. The 2,087-hour rule
OPM converts your unused sick leave hours into extra service using a fixed formula. The anchor number is 2,087 hours = one year of credit, and OPM computes annuities on a 360-day year of twelve 30-day months. From that, two handy conversions fall out:
So roughly 5.8 hours of sick leave buys one day of service, and about 174 hours buys a month. Working it through: 2,087 hours adds a full year; 1,000 hours adds about 5 months and 22 days; 661 hours adds about 3 months and 24 days. OPM publishes an official 2,087-hour conversion chart, and if your exact balance isn’t a listed figure, you round up to the next number on the chart. If you have more than 2,087 hours, subtract 2,087 for each full year and look up the remainder. There is no cap — every hour counts.
| Sick leave balance | Service credit added | Annuity boost (FERS, $100k high-3) |
|---|---|---|
| 500 hours | ~2 months, 26 days | ~$167 / year |
| 1,000 hours | ~5 months, 22 days | ~$417 / year |
| 1,500 hours | ~8 months, 18 days | ~$667 / year |
| 2,087 hours (1 yr) | 1 year, 0 months | ~$1,000 / year |
| 4,174 hours (2 yrs) | 2 years, 0 months | ~$2,000 / year |
3. The two things it can’t do
Sick leave is powerful, but it lives inside two hard limits that surprise people every year:
It doesn’t count toward eligibility. You cannot use sick leave to reach retirement — not to hit your Minimum Retirement Age, and not to reach the years of service you need to retire (30 at MRA, 20 at 60, and so on). You must already qualify on your actual service. Sick leave then sweetens the annuity once you’re eligible; it can’t get you to the door.
It’s not in your high-3. Sick leave adds to your years of service in the formula, but it has no effect on your high-3 average salary. It moves one lever in high-3 × years × multiplier — the years — and leaves the others alone.
If you leave federal service before you’re eligible for an immediate annuity and take a deferred retirement, you forfeit your unused sick leave completely — it is not credited when your deferred annuity is later computed. Sick-leave credit applies to immediate retirements (and survivor annuities), not deferred ones.
4. FERS vs. CSRS (and the 2014 change)
Both systems now credit 100% of your unused sick leave — but FERS got there only recently. CSRS employees have always received full credit. FERS employees received none until 2010, then 50% from 2010 through 2013, and full credit since January 1, 2014. That history is why some long-tenured FERS employees still under-save sick leave out of old habit; under today’s rules, every hour counts the same as it does for CSRS.
What differs is the multiplier applied to the converted time. FERS adds 1% of high-3 per year of total service (1.1% in the specific case below), while CSRS uses its richer tiered formula worth up to about 2% per year. So a given sick-leave balance is worth roughly twice as much to a CSRS retiree as to a FERS retiree — and CSRS sick leave can even push an annuity past the usual 80% maximum, since the cap is applied before sick leave is added.
5. Calculate your sick-leave boost
Enter your sick-leave balance and high-3. The calculator converts your hours to months and days the way OPM does, shows the full months that actually count, the annual and lifetime annuity increase, and — importantly — how many more hours would capture the next full month.
Your numbers
Progress to the next full month of credit
Conversion uses OPM’s 2,087-hour / 360-day basis; only full months count toward the annuity. Lifetime value ignores COLAs, so the real figure is higher. Estimate only, not advice.
6. The full-month trap
Here’s the detail that quietly costs federal employees money: only full months of sick-leave credit count. Any leftover days beyond a complete month are simply dropped. If your balance converts to 5 months and 22 days, you’re credited with 5 months — those 22 days vanish.
That makes your retirement date a small optimization problem. Before you lock in a date, check how close you are to the next full month. Because you keep accruing sick leave (4 hours per pay period for most full-time employees) right up to the end, delaying your departure by a pay period or two — or simply not burning leave in your final months — can push you over the line and capture another full month of permanent annuity credit. The calculator above shows precisely how many more hours you need. It pairs naturally with the broader December-versus-January date decision, where leave payouts and the first COLA also hinge on timing.
7. The 1.1% multiplier misconception
A persistent myth deserves a clear correction. FERS pays an enhanced 1.1% multiplier (instead of 1.0%) if you retire at age 62 or older with at least 20 years of service — a roughly 10% larger pension. Many people assume sick leave can push them across that 20-year line. It can’t.
The 20-year requirement for the 1.1% rate is an eligibility-style threshold, and — just like reaching MRA — sick leave doesn’t count toward it. You need 20 years of actual creditable service to earn the 1.1% multiplier. Once you qualify on your own service, your sick-leave months are then computed at that 1.1% rate, which makes them slightly more valuable — but the leave itself can’t be what gets you to 20 years. Plan your real service to clear the threshold; treat sick leave as the bonus on top.
8. Don’t burn it: the real cost
All of this leads to one practical conclusion: in the years approaching retirement, sick leave you spend is annuity you give up. That doesn’t mean working sick — use sick leave when you genuinely need it; that’s what it’s for. But the habit of running the balance down “because you’ll lose it anyway” is exactly backwards: you won’t lose it, you’ll convert it.
Put a dollar figure on it. On a $100,000 high-3, each full year of sick leave is worth about $1,000 a year for life, COLA-protected — well over $25,000 across a typical retirement. A 400-hour balance burned in your final two years is roughly two months of credit, or about $167 a year, gone permanently. Treat the balance as what it is — a deferred, inflation-protected asset — and protect it the way you’d protect any other piece of your pension.
9. Frequently asked questions
How is unused sick leave converted to service credit?
At retirement, your unused sick leave hours are converted to additional creditable service using OPM’s 2,087-hour rule: 2,087 hours equals one full year of service, and OPM uses a 360-day year of twelve 30-day months. That works out to about 174 hours per month of credit, or roughly 5.8 hours of sick leave per day. So 2,087 hours adds a full year, 1,000 hours adds about 5 months and 22 days, and so on. OPM publishes an official conversion chart; if your exact hours aren’t listed, you round to the next higher figure. There is no cap on how much sick leave can be credited.
Does unused sick leave count toward retirement eligibility?
No, and this is the most important limit to understand. Sick leave is added to your service only for the annuity computation — it cannot be used to meet eligibility requirements, such as reaching your Minimum Retirement Age plus the years of service you need to retire, and it is not included in your high-3 average salary. You must already qualify to retire on your actual service; sick leave then sweetens the annuity once you do. It also can’t be used to reach the 20 years needed for the enhanced 1.1% FERS multiplier at age 62 — that threshold requires actual service.
How much does sick leave add to a FERS pension?
Each full year of sick-leave credit adds 1% of your high-3 to your annuity, every year for life, and that increase is protected by future COLAs. On a $100,000 high-3, one full year of sick leave (2,087 hours) adds about $1,000 a year, or roughly $83 a month — which over a 25-year retirement totals more than $25,000 before counting COLA increases. CSRS credit is even more valuable, adding up to about 2% per year. Because sick leave can’t be cashed out, converting it to a permanent, inflation-protected annuity increase is the only way to capture its value.
What is the full-month trap with sick leave?
Only full months of sick-leave credit count toward your annuity — any leftover days beyond a full month are dropped. So if your balance converts to, say, 5 months and 22 days, you’re credited with 5 months and lose those 22 days. The strategy is to check how close you are to the next full month before you pick a retirement date: a small amount of additional sick leave, or delaying retirement by a pay period or two to accrue more, can push you over the line and capture another full month of permanent annuity credit. The calculator on this page shows exactly how many more hours you’d need.
Do FERS and CSRS employees get the same sick leave credit?
They do now. CSRS employees have always received full credit for unused sick leave. FERS employees received no credit until 2010, then 50% credit from 2010 through 2013, and have received full credit since January 1, 2014. So today both systems credit 100% of your unused sick leave at retirement. The difference is the multiplier applied: FERS adds 1% (or 1.1%) of high-3 per year of total service, while CSRS uses its tiered formula worth up to about 2% per year, making each converted hour worth more under CSRS.