FERS Sick Leave Credit: How Much Is Your Unused Leave Worth at Retirement?

If you're a FERS employee with hundreds of hours of accumulated sick leave, you're holding something with real retirement value — but it's not cash. When you retire under FERS, every unused sick leave hour converts to additional creditable service that increases your pension annuity permanently. A federal employee with 2,087 hours of unused sick leave (a full year's accrual over a career) typically adds $1,000–$1,800 to their annual pension — paid every year, for life.

This guide covers exactly how the conversion works, what the dollar impact is on your FERS pension, what sick leave credit doesn't do (the surprises that catch people off guard), and how to think strategically about your leave balance in the final years before retirement.

How the Conversion Works

OPM converts your unused sick leave balance to years and months of additional creditable service using a 2,087-hour work year.¹ That's the standard federal work year (260 days × 8 hours, minus 10 federal holidays = 2,080, with the convention rounded to 2,087 in OPM's regulations).

The math:

• Divide your sick leave hours by 2,087 to get additional full years.
• Convert the remainder to months by dividing by 174 (2,087 ÷ 12 ≈ 174 hours per month).
• Any leftover days are dropped — OPM truncates, not rounds.

Additional service = (sick leave hours ÷ 2,087) years, truncated to whole years and months

Examples:

OPM uses its own conversion chart (RI 83-8 / Chapter 50) which truncates to years and months. The calculator below implements the same logic: hours ÷ 2,087 for full years, remainder ÷ 174 for months, days dropped.

You receive 100% credit for all unused sick leave if you separated from federal service on or after January 1, 2014 (phased in from 50% credit for separations between October 28, 2009 and December 31, 2013).¹

Sick Leave Credit Calculator

Enter your sick leave balance, salary, and service details to see your additional pension credit in dollars.

Pension Impact by Salary and Leave Balance

The table below shows the annual pension boost for common sick leave balances and High-3 salary levels, assuming the 1.0% multiplier (age under 62 at retirement, or under 20 years of service).

Annual pension boost uses 1.0% × High-3 × additional service years (decimal). At the 1.1% rate (age 62+ with 20+ actual years), multiply by 1.1×. Over a 20-year retirement, multiply by 20 for approximate lifetime value before FERS COLA adjustments.

What Sick Leave Credit Does NOT Do

This is the section most guides skip — and it contains the most common misunderstandings about sick leave and retirement.

1. Sick leave does not make you eligible to retire earlier

FERS retirement eligibility requires actual creditable service: MRA+30, age 60 with 20 years, or age 62 with 5 years (or MRA+10 for a reduced annuity). Sick leave is added after eligibility is established — it increases the size of your pension but cannot push you over an eligibility threshold.¹

Example: An employee at MRA with 29.5 years of actual service and 1,500 hours of sick leave has 30 years and 8 months of total creditable service — but they still cannot retire under the MRA+30 immediate annuity provision, because sick leave doesn't count toward the 30-year threshold.

2. Sick leave does not count toward the 20-year threshold for the 1.1% enhanced multiplier

The 1.1% enhanced multiplier requires age 62 at retirement AND at least 20 years of actual creditable service (not including sick leave credit).² If you retire at 62 with 19.5 years of actual service and 600 hours of sick leave, you do not qualify for the 1.1% rate — even though your total creditable service (including sick leave) would exceed 20 years. The sick leave credit still increases your annuity, but at the 1.0% rate.

3. Sick leave does not affect your TSP Rule of 55

The Rule of 55 allows penalty-free TSP withdrawals if you separate from federal service in or after the calendar year you turn 55 (age 50 for special-category employees). This is based entirely on your age at separation — not your years of service, and not your sick leave balance.

4. Sick leave does not affect the FERS supplement

The FERS Special Retirement Supplement is calculated as (FERS creditable years ÷ 40) × estimated Social Security benefit at age 62. "FERS creditable years" for this formula uses whole years of actual service — it does not include the fractional sick leave credit. A federal employee with 28 years plus 6 months of sick leave credit receives 28 ÷ 40 of their SS estimate, not 28.5 ÷ 40.

5. Sick leave does not affect your MRA+10 penalty

If you retire under MRA+10, the 5% per year penalty is calculated based on how many years you are under age 62 at retirement — not on your service years. Adding sick leave credit to your service computation does not reduce or eliminate this penalty.

6. Sick leave credit from part-time service still counts fully

Part-time federal employees accrue sick leave at the same hourly rate and receive the same 2,087-hour conversion at retirement. However, part-time service already reduces your service years in the FERS formula (via a part-time proration factor). The sick leave itself is not double-penalized — it converts fully.

How Sick Leave Accrues: The Math of Accumulation

Full-time FERS employees accrue sick leave at 4 hours per biweekly pay period, for a total of approximately 104 hours per year.³ There is no cap on sick leave accumulation — unused hours roll over indefinitely, unlike annual leave (which has a 240-hour carryover cap for most employees).

A federal employee who takes no sick leave over a 30-year career can accumulate roughly:

• 30 years × 104 hours/year = 3,120 hours of sick leave
• 3,120 ÷ 2,087 = 1 year, 6 months of additional service credit

In practice, most federal employees use some sick leave over a career. A realistic balance at retirement for an employee who takes care of their health and manages leave carefully might be 1,000–2,000 hours, representing 5–11 months of additional pension service.

Strategic Considerations

Don't drain sick leave in the final months before retirement

The pension impact of 100 hours of unused sick leave at a $120,000 High-3 is roughly $120/year extra pension — every year, for life. If you retire at 57 and live to 82, that's 25 years × $120 = $3,000 in additional lifetime income. On a per-day basis (8 hours = $9.60/year = $240 over 25 years), "saving" a sick day you don't need is not dramatic — but the principle of not burning leave unnecessarily in the final stretch applies.

Sick leave affects whether you hit a full year or month milestone

Because OPM truncates to years and months, a small additional sick leave balance can push you across a full-month boundary and increase the pension boost meaningfully. The calculator above shows exactly where you land — if you're 50 hours short of a full additional month, it may be worth noting as you manage your final leave year.

Plan the full retirement date picture together

Sick leave credit, annual leave payout, the annuity start month rule, and the January pay raise effect on your High-3 all interact in your retirement timing decision. See the FERS Retirement Date Optimization Guide for the full picture.

CSRS employees: same 2,087-hour rule applies

Civilian CSRS employees received sick leave credit at only 50% from 1969 through 2013. Since January 1, 2014, both FERS and CSRS employees receive 100% credit. CSRS retirees use the same 2,087-hour conversion formula.