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How to Write a PTO Accrual Policy (Template and the Math)

A PTO accrual policy has to answer six questions — how much, how fast, from when, up to what cap, what carries over and what is paid at exit — and the answers have to respect the statutory floor in every country and state where you employ people. The methods, the formulas, the traps, and a clause you can adapt.

Reviewed · By Thoth· 5 primary sources

Short answer

Pick an accrual method (per pay period is simplest), convert the annual entitlement to a per-period amount — 80 hours a year is 3.08 hours per bi-weekly period — and state the start date, any cap, the carryover rule and the payout rule in writing before anyone earns time. Where the law sets a minimum, as everywhere outside the US, the policy can add to it but never delay or reduce it.

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Start from the floor, not the perk

In the United States no federal law requires paid vacation, so an accrual policy is a promise you design. Everywhere else the policy sits on top of a legal minimum: four weeks across the EU, 5.6 weeks in the UK, four weeks in Australia, and country-specific figures elsewhere. That changes what the policy is allowed to say. A US policy can start accrual after 90 days; a European one cannot, because the statutory portion accrues from day one whatever the handbook says. Write the generous part however you like — but check every clause against the country or state floor first.

The six questions

  1. How much? The annual entitlement, in hours. 15 days on 8-hour days is 120 hours.
  2. How fast? The accrual method and rate (below).
  3. From when? Day one, or after a waiting period where that is lawful.
  4. Up to what? A cap on the balance, if any — the lawful alternative to forfeiture in the no-forfeiture states.
  5. What carries over? The carryover rule, per location.
  6. What is paid at exit? Whatever the law requires, plus whatever the policy promises — see how to calculate a payout.

Every dispute about leave is a dispute about one of these six answers not being written down.

Accrual methods and the math

Per pay period (the default choice). Divide the annual hours by the number of pay periods.

  • 120 hours a year, bi-weekly (26 periods): 120 ÷ 26 = 4.62 hours per period
  • 120 hours a year, semi-monthly (24 periods): 120 ÷ 24 = 5.00 hours per period
  • 120 hours a year, monthly: 10.00 hours per month

Per hour worked. Divide annual hours by annual working hours. 120 ÷ 2,080 = 0.0577 hours of PTO per hour worked — about 1 hour for every 17.3 worked. This pro-rates part-time and variable-hour staff automatically and is the method most US paid-sick-leave laws use (typically 1 hour per 30 or 40 worked).

Monthly on the anniversary. Common in Europe: one-twelfth of the annual entitlement per month of service. The UK writes this into the first year by regulation; France accrues 2.5 working days per month by statute.

Front-loaded. The full year granted on 1 January or the hire date, pro-rated for joiners. Simple, but say how a mid-year leaver’s grant is reduced — and remember that in the EU the statutory part, once granted, is paid at exit.

Whichever method you choose, our accrual calculator converts an annual entitlement into the per-period figure and a running balance so you can check the arithmetic against payroll.

Rounding, part-time and joiners

  • Round to two decimals in hours and never round balances down to whole days — that is where “you owe me half a day” arguments come from.
  • Part-time staff get the same rate per hour worked, or the same fraction of the full-time grant as their contracted hours are of full-time. Both are lawful; the second is easier to explain.
  • Joiners mid-period accrue for the days worked in that period: rate × (days worked ÷ days in period).
  • Unpaid leave and long-term sickness: say whether accrual pauses. In the EU, statutory leave keeps accruing during sick leave and parental leave; only the contractual extra can be paused.

Caps, carryover and payout — the three clauses that get you sued

Caps limit how high a balance can grow. Lawful everywhere in the US, including states that ban forfeiture, because nothing already earned is removed. A cap of 1.5× to 2× the annual entitlement is typical. In the EU a cap on the statutory portion is not possible; cap the extra.

Carryover is a legal rule in Europe and Australia and a policy rule in most US states. The carryover guide has the country detail and a clause; the short version is oldest-first, a use-by date where the law allows one, and full protection for leave the employee was prevented from taking.

Payout at exit is required across the EU, the UK and Australia and in a dozen US jurisdictions. Where it is optional, the policy must say clearly what happens, before the time is earned.

A policy you can adapt

Accrual of paid time off. Full-time employees accrue [120] hours of PTO per year, credited at [4.62] hours per bi-weekly pay period from the first day of employment. Part-time employees accrue on the same basis in proportion to their scheduled hours. Accrual is pro-rated for partial pay periods and [continues / pauses] during unpaid leave of more than [30] days, except where the law requires accrual to continue. No further PTO accrues while an employee’s balance is at or above [180] hours. Up to [40] hours may be carried into the next calendar year and must be used by [31 March], oldest hours first; leave that could not be taken because of a protected absence carries over in full. Accrued, unused PTO is paid at the employee’s final rate of pay when employment ends [where required by law / in all cases]. Where local law is more favourable to the employee, local law applies.

Replace the bracketed values per location. For a European group, delete the cap on the statutory portion and the “where required by law” option — payout is always required — and set carryover to the national rule.

Before you publish it

Run three checks: does anyone, anywhere, end up below the legal minimum; does the tracker you use actually support the rules you wrote (per-group caps, oldest-first deduction, pro-rating); and can you produce, for any employee on any date, the balance and the approvals behind it. The first is law, the second is tooling, the third is what decides the argument when someone leaves.

Common questions

Is a waiting period before accrual starts legal?

In most US states, yes, if it is written and applied consistently. In Europe it is not: EU law requires leave to accrue from the first day of work, and even Germany's six-month waiting period only delays when the full entitlement can be taken, not whether it accrues. The UK accrues leave at one-twelfth of the entitlement per month during the first year.

Should we accrue in hours or days?

Hours, unless everyone works identical schedules. Hours pro-rate part-time staff automatically, handle half-days without rounding disputes, and match how payroll and payout are calculated. Show days to employees if you like, but store hours.

Front-loading or accrual — which is better?

Front-loading (granting the full year on 1 January) is simpler to explain and lets new parents or travellers take leave early; accrual protects you from paying out a full year to someone who leaves in February. Many employers front-load the statutory portion and accrue the rest. Whatever you choose, state how a mid-year leaver's grant is pro-rated.

Can the accrual rate differ by seniority or role?

Yes, as long as the differences are not discriminatory and nobody falls below the statutory minimum. Tenure-based steps are common everywhere; several countries (France, Turkey, Mexico, South Korea) build them into the law itself.

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Sources

General information, not legal advice. Rules change and national implementations differ — confirm against the current text or a local employment lawyer before acting. See our methodology.