Household Payroll 101

Frontload PTO at Separation: How Much Do You Actually Owe?

If your nanny or caregiver leaves mid-year and you frontloaded their PTO at the start of the year, you don't owe the full unused balance. You owe the earned-but-unused portion, pro-rated by time worked. Here's the principle, the math, and the state-by-state variations.

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Updated May 2026 · Verified against IRS Publication 15, CA Labor Code §227.3, CA DIR Vacation FAQ, and DLSE opinion letters
The short version. Vacation accrues pro-rata as your employee works, even when you frontload the entire annual amount upfront. At separation, you owe what they earned through their last day, less anything they've already used, paid at their final hourly rate. Statutory sick leave generally doesn't have to be paid out at all. The whole game is keeping vacation and sick leave as separate buckets, and pro-rating the rest.

The pro-rata principle

The single rule that does most of the work: in vacation-is-wages states, vacation accrues as labor is performed — even when frontloaded. The law generally treats those hours as "earned" only as the employee works through the year, regardless of when they were granted. The clearest plain-English articulation comes from California's Department of Industrial Relations, but the same principle applies in Illinois, Colorado, Louisiana, Massachusetts, Montana, Nebraska, and North Dakota under their own wage-payment statutes:

From the CA DIR Vacation FAQ: "Under California law, earned vacation time is considered wages, and vacation time is earned, or vests, as labor is performed. For example, if an employee is entitled to two weeks (10 work days) of vacation per year, after six months of work he or she will have earned five days of vacation."

Source: CA DIR — Vacation FAQ

The legal foundation in California is Labor Code §227.3 combined with Suastez v. Plastic Dress-Up Co. (1982), the state Supreme Court ruling that established vacation as deferred compensation that vests pro-rata. The other vacation-is-wages states follow similar reasoning under their own wage-payment statutes; California's case law is just the most developed.

A worked example

Say your nanny earns $25/hour. You frontloaded 80 hours of vacation on January 1, 2026. She gives notice and her last day is June 30, 2026 — exactly halfway through the year. She used 16 hours during the first half. What do you owe?

Earned through 6/30
40 hrs
80 annual hrs × 50% of year worked
Already used
−16 hrs
subtract from earned
Earned-but-unused
24 hrs
the payable balance
Final payout
$600
24 hrs × $25 final rate
The contrast that matters. The naive reading of "frontloaded 80, used 16, so I owe 64 at separation" overpays by 40 hours — $1,000 in this example. Pro-rata is the right answer in California, Illinois, and every other state that treats vacation as earned wages.

Two important details:

  • Final rate of pay, not accrual rate. If she got a raise mid-year — say, from $22 to $25 — you owe 24 hours × $25 = $600, not $528. This is the standard rule wherever accrued vacation must be paid out at separation: it's calculated at the rate in effect on the last day of work, not the rate when the time was originally "earned."
  • Daily, not monthly, granularity. If she leaves on August 7 (the 219th day of the year), that's 60% of the year — 80 × 60% = 48 hours earned, not "halfway."

Sick leave vs. vacation: the buckets matter

Most states draw a sharp line between two kinds of paid time off, and the line determines payout obligations at separation:

  • Statutory sick leave — paid sick leave required by state law. As of 2026, 20 states (plus DC) have mandatory paid sick leave with annual minimums ranging from roughly 24 to 56 hours depending on the state and employer size. No state or local jurisdiction in the U.S. requires unused sick leave to be paid out at separation — every mandatory sick leave statute carves out separation payout. (See the state variations section below for the full state list.)
  • Voluntary sick leave (in states without a state-level mandate) — about 30 states don't require paid sick leave. If you offer sick leave to a household worker in one of those states, it's a voluntary benefit and the rules of your written policy govern. Most household employers still offer some sick leave for retention reasons; just be explicit in your policy whether unused sick leave is paid out at separation.
  • Vacation — in eight "vacation-is-wages" states (CA, IL, CO, LA, MA, MT, NE, ND), vacation is treated as earned wages and required to be paid out at separation under state wage-payment statutes. In all other states, vacation payout depends on your written policy.
The mixed-bucket trap. If you combine sick and vacation into a single "PTO" bank, the entire balance generally gets characterized as vacation — converting your no-payout sick leave into payable wages at separation. The sick-leave carve-out for separation is lost. Track sick and vacation as separate buckets on the pay stub.

Three traps for frontloaded PTO

A note on the Nest Payroll approach. Nest is built around the frontloading model — the first year is pro-rated from the employee's start date, and the full annual amount frontloads on January 1 each year thereafter. Nest doesn't currently support hour-by-hour accrual. The traps below are the ones that matter for frontloaders specifically.
  1. Treating unused vacation as "use it or lose it" at year-end. In the eight vacation-is-wages states (CA, IL, CO, LA, MA, MT, NE, ND), earned vacation can't be forfeited — even when you frontloaded it. The Suastez / §227.3 line of cases treats frontloaded vacation as accruing pro-rata through the year, so by December your employee has "earned" the full annual amount. If they used 30 of 80 hours, the remaining 50 are earned wages — they have to carry over to the next year, get paid out at year-end, or be absorbed into the next year's frontload. The cleanest path: frontload only the statutory sick-leave floor (which state guidance explicitly allows you to reset each year for frontloaded sick leave) and don't offer additional vacation unless you're ready to carry it over or pay it out.
  2. Cliff vesting (lump-sum on anniversary). A policy that grants 80 hours of vacation only on the employee's one-year anniversary — and gives nothing if they leave before — is generally treated as an attempt to avoid pro-rata accrual. State agencies in vacation-is-wages states have flagged this; California's DLSE has been the most explicit. Use a probationary period (no PTO at all for the first 90 days, say) instead of cliff-vesting.
  3. Mixing sick and vacation in one bucket. Covered above. Worth repeating because it's the most common trap and the most expensive — combining them converts your no-payout sick leave into payable wages at separation.

Edge cases

Advanced vacation. If your employee takes all 80 hours of frontloaded vacation in January and quits in June — having "earned" only 40 — you generally cannot claw back the advance from their final paycheck. The rule is consistent across most states: "self-help" deductions from final pay aren't allowed without a written authorization signed before the advance was given. Most household employers don't have that kind of agreement in place, so plan as if advanced vacation is non-recoverable.

Rehire within 12 months. If you let an employee go and rehire them within 12 months, several states (CA, NJ, OR, NY) require you to reinstate their previously-earned-but-unused statutory sick leave. Vacation generally doesn't have to be reinstated unless it was already paid out at separation (in which case the slate started fresh).

Negative balance at separation. See "Advanced vacation" above. If the employee's balance is negative because they used more than they earned, you owe nothing — but you also generally can't deduct the negative amount from the final paycheck.

Tax treatment of payouts

For the IRS, a vacation payout at separation is supplemental wages under Publication 15. Three things to know:

  • Federal income tax withholding. The IRS allows two methods: (1) flat 22% supplemental rate (for payouts under $1M), or (2) aggregate method — combine the payout with regular wages and withhold per the W-4 tables. Nest uses the aggregate method, so the payout is added to the worker's final regular wages and withheld at their normal W-4-based rate.
  • FICA (Social Security + Medicare). 7.65% employee + 7.65% employer, same as regular wages. No special treatment.
  • State income tax. Most states with income tax treat the payout as supplemental wages — some apply a flat state supplemental rate, others use the regular withholding tables. Nest uses the aggregate method for state withholding too: the payout is combined with regular wages and withheld at the worker's regular state rate (per their state withholding form, e.g. CA DE 4). This keeps the state approach consistent with the federal one.

The payout reports on the W-2 in Box 1 (federal taxable wages), Boxes 3/5 (SS/Medicare wages), and Box 16 (state taxable wages, if applicable) — same boxes as regular wages.

Nest is built around the frontloading model.

Sick and vacation are tracked as separate buckets, with the right pro-rata payout calculation when your employee leaves. No accrual math, no year-end true-up.

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State variations at a glance

Whether unused vacation must be paid out at separation depends on your state. Sick leave coverage varies too. For the full state-specific rules — including any local ordinance overlays — see your state's household employer guide.

Vacation payout at separation

  • Required by state law in 8 states: California, Illinois, Colorado, Louisiana, Massachusetts, Montana, Nebraska, North Dakota.
  • Depends on your written policy in all other states. If your policy says you'll pay out, you have to. If your policy is silent or explicitly says no payout, then no payout — but be aware that "past practice" can sometimes create an obligation even without a written policy.

Statutory sick leave

Mandatory paid sick leave applies in 20 states + DC as of 2026: Alaska, Arizona, California, Colorado, Connecticut, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, Nebraska, Nevada, New Jersey, New Mexico, New York, Oregon, Rhode Island, Vermont, Washington, and Washington, D.C. Annual minimums vary from about 24 to 56 hours depending on the state and employer size.

No statewide mandate (about 30 states): Alabama, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Mississippi, Missouri, Montana, New Hampshire, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, West Virginia, Wisconsin, Wyoming. In these states, any sick leave you offer a household worker is voluntary and your written policy governs the terms.

Sick leave at separation, anywhere: No U.S. state or local jurisdiction requires payout of unused sick leave at separation. The carve-out from final-pay obligations is universal — but only when sick leave is tracked separately from vacation (see the mixed-bucket trap above).

Where to find your state's rule: See our state-by-state household employer guides for the full rules in your state, including any local ordinance overlays (Chicago paid leave, San Francisco sick leave, NYC ESSTA, Seattle sick leave, etc.). City-level ordinances exist in non-mandate states too — Pennsylvania's Pittsburgh and Philadelphia, for example.

What goes in your written PTO policy

Five things every household PTO policy should specify

  • Sick and vacation as separate buckets. Don't combine them into a single "PTO" category. Track each one's annual entitlement and balance separately on the pay stub.
  • Frontload date. State the date the annual amount becomes available. With Nest, the first year is pro-rated from the employee's start date through December 31, and the full annual amount frontloads on January 1 each year thereafter.
  • Annual reset for sick leave. State explicitly that frontloaded statutory sick leave resets to the full annual amount each year (on January 1, in Nest's case). State agency guidance generally allows annual reset for frontloaded sick leave, in contrast to accrued sick leave which requires carryover.
  • Vacation carryover or annual payout. If you offer vacation above the statutory sick-leave floor, state how unused hours are handled at year-end — carried over to the next year, paid out as wages, or absorbed into the next year's frontload. In CA, IL, and the six other vacation-is-wages states, you can't simply forfeit unused vacation.
  • Separation payout treatment. Make explicit that vacation is paid out at the final rate of pay, pro-rated through the last day of work, less any used hours. State that statutory sick leave is not paid out at separation.

Quick reference

States requiring vacation payout
8
CA, IL, CO, LA, MA, MT, NE, ND
Federal income tax withholding
Aggregate
combined with final wages at W-4 rate
Frontloaded sick leave
Resets annually
to full amount each year (state-by-state)
Final rate of pay rule
Yes
includes regular shift differentials
Disclaimer: This article is for informational purposes only and should not be considered tax or legal advice. Vacation and sick leave laws vary by state and locality, and policies governing accrued PTO should be reviewed by a licensed employment attorney before implementation. Consult a qualified tax professional for guidance specific to your situation.

Sources:
  • IRS Publication 15 (Circular E), Employer's Tax Guide — supplemental wages
  • CA Department of Industrial Relations — DLSE Vacation FAQ (pro-rata accrual)
  • California Labor Code §227.3 — vested vacation as wages
  • Suastez v. Plastic Dress-Up Co., 31 Cal.3d 774 (1982) — pro-rata accrual
  • State wage-payment statutes in CA, IL, CO, LA, MA, MT, NE, ND — vacation-is-wages doctrine
  • State paid sick leave statutes (20 states + DC, current as of 2026) — including the universal no-payout-at-separation carve-out
  • Illinois Wage Payment and Collection Act, 820 ILCS 115
  • CA DLSE Opinion Letters on cliff vesting and frontloaded sick leave year-end reset