Federal law sets no standard percentage for a nanny shift differential, but it does decide which hours you must pay. On shifts under 24 hours, every hour on site is paid, sleep included. On shifts of 24 hours or more, up to 8 hours of sleep may be excluded under set conditions. Many families add an evening or overnight premium, commonly 20–40% above the daytime rate.
TL;DR:
- For shifts lasting 24 hours or more, you may exclude up to 8 sleep hours only with adequate facilities, agreement, and roughly 5 uninterrupted hours.
- Pay every wake up, and count the entire sleep period as work if interruptions prevent your nanny from getting a reasonable night's rest.
- A common overnight premium is 20% to 40% above daytime pay; at a $25 base rate, a 25% premium equals $31.25 per hour.
- Count overnight hours toward the weekly overtime threshold of 40 hours, check for state daily overtime rules, and add pay if the premium falls short.
- Put the base rate, covered hours, sleep rules, interruption pay, and overtime method in writing, then log each shift and sleep interruption.
Table of Contents
- What do federal rules say about sleep time and overnight shifts?
- How do you calculate a shift differential? Formulas and examples
- How do overtime and payroll pitfalls affect overnight pay?
- Which states have stricter rules than federal law?
- How do you negotiate and document an overnight pay agreement?
- What records prove hours and interruptions?
- Why clear, fair pay agreements matter
- How can our free app and payroll consultations help?
- FAQ
- Sources
What do federal rules say about sleep time and overnight shifts?
The Fair Labor Standards Act focuses on hours worked, not on premiums. If a shift runs under 24 hours, all time on site counts as hours worked and must be paid, even when your nanny is allowed to sleep. That is the rule many families get wrong when they assume sleep is automatically unpaid.
For shifts of 24 hours or more, an employer may exclude up to 8 hours of sleep time, but only when three conditions are met: you provide adequate sleeping facilities, your nanny can usually enjoy an uninterrupted night's sleep of about 5 hours, and you both have an expressed or implied agreement. The Wage and Hour Division's Field Assistance Bulletin explains the eight-hour cap and the five-hour sleep requirement.
Interruptions matter. Any work during claimed sleep time, such as a feeding or a sick child, must be paid. If interruptions are frequent enough that your nanny cannot get a reasonable night's sleep, the entire sleeping period counts as hours worked.
Live-in status adds another wrinkle. Whether a worker "resides" at the worksite depends on the facts, and courts place the burden on the employer to prove an exemption applies, as the Eleventh Circuit's Blanco v. Samuel decision shows. Never assume a live-in exemption without checking those facts.
How do you calculate a shift differential? Formulas and examples
Start from the agreed base hourly rate. For a percentage premium, the formula is base rate × (1 + premium). For a flat nightly stipend, add it to the hourly pay for all hours worked, then confirm the total still meets minimum wage and overtime rules.
Here are three illustrative scenarios, assuming a $25 base rate:
- Evening shift, 8 hours, 25% premium: $25 × 1.25 = $31.25 per hour, so $250 for the shift.
- Overnight, 8 p.m. to 8 a.m.: This is under 24 hours, so all 12 hours are payable. At the same 25% premium, that is 12 × $31.25 = $375. If these hours push the week past 40, the extra hours earn overtime.
- 24-hour shift with a sleep exclusion: If the three conditions are met, you may exclude up to 8 hours, leaving 16 paid hours. If your nanny is woken for 1 hour of care, that hour is paid, so you pay 17 hours. If interruptions prevent roughly 5 hours of sleep, all 24 hours are paid.
Market anchor: Overnight nannies typically charge 20–40% more than daytime rates, which gives you a reasonable range to open a conversation.
If you split shifts, our guide on how to calculate and document nanny split shift pay walks through the math.
How do overtime and payroll pitfalls affect overnight pay?
Nonexempt nannies earn time-and-a-half after 40 hours in a workweek, and state rules may also provide for daily overtime. An overnight shift can push a week past 40 hours quickly, so plan for it before you agree on a rate. For state-specific thresholds, see our nanny overtime by state breakdown.
Premiums can sometimes be credited toward overtime when they are properly structured. A WHD opinion letter explains that agreed premiums for extended or live-in shifts may count toward overtime owed, but you must supplement pay when actual hours create additional overtime liability.
Watch for these common mistakes:
- Treating sleep time as unpaid on a shift under 24 hours.
- Paying a flat overnight fee that falls below minimum wage or overtime pay once all hours are counted. Payroll practitioners warn that flat fees can violate wage laws when they do not cover every hour at a legal rate.
- Having no clear agreement on how interruptions are paid.
To stay safe, record every hour, calculate the regular rate correctly, and add supplemental pay whenever your planned premium does not cover the overtime your nanny actually worked. Our post on avoiding back pay under the 24-hour rule covers the cost of getting this wrong.
Which states have stricter rules than federal law?
Federal law is the floor, not the ceiling. Some states and cities require more, and the sleep-time exclusion is often where they differ.
- New York City: The city's domestic employee rights statement spells out paid-hour calculations for split shifts and 24-hour shifts, including minimums when sleep and meal breaks are not provided.
- California: State rules may affect how sleep time and hours on site are treated. Check the applicable state guidance, and see our California nanny overtime guide for more information.
- Everywhere else: Check your state labor department or local domestic worker guidance before you rely on a sleep exclusion or a custom pay formula.
When state and federal rules differ, check the rules that apply to your location. If you are unsure which applies, consider getting a consultation.
How do you negotiate and document an overnight pay agreement?
A written agreement prevents most disputes. Put these items on paper before the first overnight:
- Base hourly rate and the exact hours or time window when the differential applies.
- How sleep time and interruptions are treated and logged.
- How overtime is calculated.
- Payment schedule and how either of you can request changes.
Confirm the total meets minimum wage and overtime rules in your state. Families often propose a few trial nights, put the terms in writing after each discussion, and review the arrangement every few months. Amend the contract whenever duties change.
Pro Tip: Add a clause stating exactly how interruptions are recorded and paid, such as logging each wake-up with a start and stop time.
What records prove hours and interruptions?
Good records protect both sides. Keep daily start and stop times, a note of every interruption during sleep periods, signed weekly summaries or pay stubs, and a copy of the written agreement.
These records become your evidence in any overtime or sleep-time dispute, and they are especially important when you pay in cash. A dedicated time-tracking app, a shared spreadsheet, or a printed sign-off sheet all work, so choose the one you will actually use every week. Keep the records for several years in case of an inquiry. Our guide to sleep time rules and overnight logs shows what a clean log looks like.
Why clear, fair pay agreements matter
Most conflicts over overnight pay come from unspoken assumptions, not bad intent. A nanny who wakes at 3 a.m. for a feverish child is working, and a family that budgets honestly for that care keeps a caregiver for the long run. Put the terms in writing, track the hours, and revisit the arrangement when life changes. That is fair to both sides.
— mercedes
How can our free app and payroll consultations help?
We built our free caregiver app so work hours can be tracked accurately from day one:
- Caregivers receive and approve schedule requests and see every job in one calendar.
- Weekly hours are tracked accurately.
- Families who need a compliance review or back-pay calculation can book our payroll consultation and household payroll cleanup services.
Download our free time-tracking app and start logging your next overnight shift today.
FAQ
Is a nanny shift differential required by law?
No. Federal law sets no standard shift-differential percentage. It does require that you pay for all hours worked, including all on-site time on shifts under 24 hours.
Can you exclude sleep time from a nanny's pay?
Only on shifts of 24 hours or more, and only up to 8 hours. You must provide adequate sleeping facilities, your nanny must usually be able to sleep about 5 hours uninterrupted, and you both must agree, per the Department of Labor.
What is a typical overnight premium for a nanny?
Market practice often falls between 20% and 40% above the daytime rate, according to Department of Labor night work guidance. Some families pay a flat nightly stipend instead.
Do overnight hours count toward overtime?
Yes. Overnight hours count toward the 40-hour workweek, and some states also apply daily overtime. If you pay a premium, you may need to supplement pay when total hours create more overtime than the premium covers.
What should a nanny overnight agreement include?
Include the base rate, the hours the differential covers, how sleep and interruptions are handled, the overtime method, and the payment schedule. For a safe hiring checklist, see this private caregiver safety plan.
Sources
- Dol
- Statement of Domestic or Household Employee Rights and Employer Responsibilities
- How to Pay Your Nanny for an Overnight Shift | GTM Payroll