Does night differential count toward overtime?
Yes. Your night differential belongs in your overtime rate.
Yes. A shift differential is part of your regular rate, and your overtime premium is calculated on the regular rate — not on your base rate.
- 29 CFR 778.109
- 29 CFR 778.115
- 29 CFR 778.207(b)
- DOL Fact Sheet #54
This is the single most common way a hospital paycheck comes up short, and it is almost invisible on the stub. The differentials are usually paid. They are simply left out of the rate the overtime is multiplied against.
The regular rate is everything you earned, divided by every hour you worked.
Overtime under the FLSA is not one and a half times your base rate. It is one and a half times your regular rate, and 29 CFR 778.109 defines the regular rate as your total straight-time earnings for the workweek divided by the total hours you worked in that workweek.
29 CFR 778.207(b) is explicit that extra pay for working undesirable hours — nights, weekends, holidays — is part of the regular rate. It is not a bonus and it is not excludable. 29 CFR 778.115 sets out the same weighted-average method for anyone paid at two or more rates in a week, which is every rotating nurse in the country.
Plainly
If you were paid a differential for an hour, that money counts toward the rate your overtime is priced from. Every hour of overtime in the week, not only the night hours.
Fifty hours, four of them on nights the payroll system forgot.
A nurse at $38.00 an hour works 50.0 h in one workweek. Thirty-six of those hours carried a $4.50 night differential, and 24.0 h of them fell on a Saturday and Sunday at a $3.00 weekend differential.
Straight-time earnings for the week
- Base pay · $38.00 × 50.0 h
- $1,900.00
- Night differential · $4.50 × 36.0 h
- $162.00
- Weekend differential · $3.00 × 24.0 h
- $72.00
- Straight-time earnings
- $2,134.00
- Hours worked
- 50.0 h
Her regular rate is $42.68, not $38.00. She has 10.0 h of overtime, so the premium owed on top of straight time is half the regular rate for each of those hours.
The overtime premium, two ways
- Premium owed · 0.5 × $42.68 × 10.0 h
- $213.40
- Premium if computed on base · 0.5 × $38.00 × 10.0 h
- $190.00
Twenty-three dollars and forty cents, in a week where the differentials were paid in full and nothing on the stub looks wrong. Twenty-six paydays a year, two years of federal lookback under 29 USC 255(a), three if the underpayment was willful.
Find the overtime premium line on your own stub.
Most hospital stubs show overtime as a separate earning code with its own rate. Look at the rate on that line. If it is exactly one and a half times your base rate, the differentials were not in it — and the arithmetic above applies to your week.
Some systems instead show a small separate line, sometimes called an overtime premium adjustment or a blended rate adjustment, which is the employer doing this calculation correctly. If that line exists and is roughly the difference above, your payroll department is getting it right.
Excluded on purpose
Not everything counts. 29 CFR 778.200 lists pay that is excludable from the regular rate — certain gifts, reimbursements, and premiums already paid at time and a half for work outside standard hours. Hourly shift differentials are not on that list.
Run the numbers on your own week.
Enter your base rate, your hours and your differentials, and see your own regular rate and the gap in your own week.
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