Use It or Lose It PTO: Is It Legal and How Does It Work?

Every December the same thing happens: half the team suddenly books time off, the other half discovers they have eight days left and nowhere to put them, and someone asks HR whether those days really disappear on 1 January. If your policy says “use it or lose it”, the answer is usually yes. In some places, it is not allowed to be.

This guide explains use it or lose it PTO: what it means, where it is legal, how state laws in the US differ, how it works in the UK and EU, and the alternatives that get you most of the benefit with less risk.

What is use it or lose it PTO?

Use it or lose it is a rule about unused paid time off. At the end of a set period, normally the calendar year or the employee’s work anniversary, any PTO left in the balance is wiped out. The new year starts from zero, or from the new year’s allowance.

It is the strictest of three common approaches to year-end balances:

• Use it or lose it: nothing carries over.
• Limited carryover: up to a set amount, say five days, rolls into next year and the rest is forfeited. Some policies also require carried days to be used by a deadline such as 31 March.
• Unlimited carryover: everything rolls over, usually kept in check by an accrual cap.

If you accrue PTO rather than front-loading it, the year-end rule sits alongside your accrual rate and cap. Our guide on how PTO accrual works explains how those pieces fit together.

Is use it or lose it legal?

In the US there is no federal law requiring paid vacation, so the question is decided state by state. The key test is whether a state treats earned vacation as wages. If it does, taking those days away is treated like taking back pay the employee has already earned, and forfeiture is not allowed.

In states that do not treat vacation as wages, or that let the policy decide, use it or lose it is generally lawful as long as:

• the policy is in writing and employees were told about it;
• employees had a genuine chance to take their time off before the deadline;
• you apply it consistently, not only to the people you would rather not pay out.

A separate but related question is what happens when someone leaves. Several states require earned, unused vacation to be paid out at termination even where use it or lose it is allowed during employment. Our PTO payout calculator works out what that balance is worth.

State rules at a glance

The table below covers the states employers most often ask about. Laws and court decisions change, so treat it as a starting point and check the current rules, or ask an employment lawyer, before you rely on it.

Two patterns stand out. First, “depends on the written policy” means exactly that: if your handbook is silent, courts in many states read the gap in the employee’s favour. Second, the strict states still let you control balances. You just do it with a cap instead of a forfeiture date.

What about sick leave?

Most use it or lose it discussions are about vacation. Sick leave follows different rules. More than a dozen states and many cities have paid sick leave laws, and most of them require unused sick time to carry over into the next year, usually up to a cap. Some let employers avoid carryover by front-loading the full annual amount on day one instead.

This matters if you run a single PTO bank that covers vacation and sickness. Where a paid sick leave law applies, the part of the balance that satisfies it generally has to follow the sick leave rules, so a blanket use it or lose it clause can fall foul of the law even in a state that allows it for vacation. Many employers in those states keep the two balances separate for exactly this reason.

Outside the US

United Kingdom

UK workers are entitled to 5.6 weeks of paid holiday a year (28 days for someone working five days a week, which can include bank holidays). The default position is that the four weeks derived from EU law have to be taken in the leave year, so a form of use it or lose it applies to them. The extra 1.6 weeks can be carried over if the contract allows.

There are important exceptions. Workers who could not take their holiday because of sickness or family leave can carry it over, and since 2024 employers who do not give workers a reasonable chance to take their leave, or who do not tell them it will be lost, can lose the right to forfeit it. On leaving, any accrued statutory holiday that has not been taken must be paid. Our holiday entitlement calculator works out the statutory minimum for full-time, part-time and irregular-hours staff.

European Union

EU law guarantees at least four weeks of paid annual leave. The Court of Justice has ruled that this minimum can only be lost at the end of the year if the employer actively encouraged the worker to take it and told them, in good time, that it would otherwise be forfeited. A handbook clause alone is not enough. Individual countries add their own carryover deadlines on top, so check the local rules for each country where you employ people.

Pros and cons for employers

The December rush deserves special attention. If ten people on a team of twelve all have days left in December, someone will be told no, and then the policy really does take away time they were never able to use. A shared team calendar and a mid-year reminder about remaining balances do more to prevent that than any policy wording.

Alternatives to use it or lose it

Limited carryover

Let up to a fixed amount roll over, often five days or one week, and forfeit the rest. This takes the pressure off December while still stopping balances from growing year after year. Where forfeiture is banned, you cannot use the “forfeit the rest” part, but you can combine carryover with a cap.

Accrual cap

Set a maximum balance, for example 1.5 times the annual allowance. Once someone reaches it they stop earning PTO until they take some time off. Nothing they already earned is taken away, which is why caps are the standard tool in California and other states that ban forfeiture.

Carryover with an expiry date

Allow all or some unused days to roll over, but require them to be taken by a set date in the new year, such as 31 March. It spreads the end-of-year bookings over a longer window. Check local law, since this is still a form of forfeiture for the days that expire.

Cash-out

Offer to buy back some unused days at year end. It removes the pressure to book unwanted time off but costs money and works against the goal of getting people to rest. Cashed-out PTO is taxable as wages.

Donation to a leave bank

Let employees donate unused days to colleagues facing a medical or family emergency. It is rarely a full solution on its own, but it can sit alongside a carryover limit.

How to write the policy

Whichever rule you choose, the wording has to be specific enough that nobody can read it two ways. Cover:

• The cut-off date: calendar year end, fiscal year end or each employee’s anniversary.
• What carries over: nothing, a fixed number of days or hours, or everything up to a cap.
• Any expiry date for carried-over days.
• Which leave types it applies to. Vacation only, or sick leave too, subject to local sick leave law.
• What happens at termination: whether unused PTO is paid out, and how it is calculated.
• Exceptions: for example, when a manager cancels approved leave for business reasons, or an employee is on long-term sick or parental leave near the deadline.

A short example for a state that allows limited carryover:

Our guide on how to write a leave policy has a full template with sections for carryover, accrual and payout.

The bottom line

Use it or lose it is legal in most US states if it is written down and employees have a real chance to take their time off, but California, Colorado, Montana and Nebraska do not allow earned vacation to be forfeited, and the UK and EU limit it too. For most teams a small carryover allowance or an accrual cap does the same job with less friction: balances stay under control, nobody loses time they earned, and December stops being a scramble. Whatever you choose, remind people of their balance well before the deadline and make it easy to see who is already off.