Unlimited annual leave: what are the rules?

“Unlimited holiday” sounds generous until every request comes back with “we need cover”. A promise in the handbook is no substitute for paid time off. You still have a statutory entitlement, and your employer must give you a real chance to take it.

How unlimited actually works

Your statutory entitlement and your employer’s offer are separate. The Working Time Regulations 1998 set the minimum in England, Wales and Scotland. An unlimited scheme does not switch them off.

“Unlimited”, “uncapped” and “flexible” are labels, not legal definitions. Flexible leave might still have a fixed allowance; a handbook might make extra benefits non-contractual. Read the terms before treating a recruitment promise as an enforceable right.

Ask which days count as statutory leave, whether extra days are paid and who approves them. See our holiday pay guide for calculations.

Your statutory minimum, in days

For regular-hours workers employed throughout the leave year, multiply your normal working days per week by 5.6, subject to the 28-day cap. GOV.UK’s entitlement guidance gives these figures:

A six-day worker’s statutory minimum is still capped at 28 days. A contract can offer more. The right belongs to workers, including eligible casual, zero-hours and agency staff. See our Working Time Regulations guide.

Bank holidays are not automatically extra. Counting eight within a five-day worker’s 28-day allowance leaves 20 other days. A three-day retail worker still needs 16.8 days in total. Deduct bank holidays only when they replace days you would otherwise work. See part-time worker rights.

Shifts, starters and irregular hours

Ask for your leave-year dates. Without an agreement, a new starter’s year normally begins on their first day. Mid-year starters get a proportionate allowance. During a regular-hours worker’s first year, employers can use monthly accrual at one-twelfth of the annual entitlement.

A security guard working four 12-hour shifts followed by four days off averages 3.5 shifts a week. Their full-year minimum is 3.5 x 5.6 = 19.6 shifts, as nidirect’s worked example shows.

Great Britain leave years starting on or after 1 April 2024 use different rules for irregular-hours and part-year workers. Irregular-hours contracts have wholly or mostly variable paid hours each pay period. Part-year contracts require work for only part of the year, with unpaid periods of at least a week when no work is required. A changing rota alone is not enough.

Eligible workers accrue 12.07% of hours worked each pay period. Fractions below half an hour round down; half an hour or more rounds up. A warehouse picker paid weekly earns 3.621 hours for 30 hours worked, rounded to four hours.

For this group, Great Britain employers can choose rolled-up holiday pay, an extra 12.07% of pay for work done, separately itemised on each payslip. On £270, that is £32.59. You still take time off, but receive the pay alongside wages instead. Rolled-up pay remains unlawful for regular-hours workers.

Policy coverage depends on the terms. See zero-hours rights and agency worker rights if your employer disputes your entitlement.

Your boss still controls when

You still need approval. The default notice rules below can be varied by a relevant agreement, such as your contract, in either direction.

Under GOV.UK’s booking guidance, you give at least twice the length of the leave plus one day’s notice. Five days off therefore needs 11 days’ notice. To refuse or cancel five days, your employer gives at least six days’ notice.

Shutdown notice is different. Your employer must give at least twice the leave length and tell you before that notice period starts. For five days, that means more than ten days ahead, not six.

An employer can refuse dates, not all leave. Repeated refusals can trigger protected carry-over, explained below.

Pay, sickness and family leave

For regular-hours workers in Great Britain, at least four weeks must be paid at the normal rate, including relevant commission, regular overtime and shift payments. The other 1.6 weeks can be paid at basic rate. Both are statutory leave. Your employer can pay more.

Eligible irregular-hours and part-year workers get the normal rate for all statutory leave. Pay calculated when leave is taken normally uses 52 paid weeks, looking back no more than 104 weeks. With a shorter paid history, use the available complete paid weeks. Lawful rolled-up pay uses the percentage method instead.

Holiday builds up during sickness, maternity, paternity and adoption leave. Irregular-hours and part-year workers use a separate averaging calculation during these absences. You can request holiday while sick; your employer cannot force it. If statutory family leave prevents holiday, the untaken statutory entitlement carries into the next year.

When leave carries over

Sickness protects up to four weeks for regular-hours workers, normally 20 days on a five-day week. It protects the whole accrued statutory entitlement for eligible irregular-hours and part-year workers. Use it within 18 months of the end of the original leave year.

Employer failure also protects carry-over. This applies if your employer fails to recognise your paid-leave right, give you reasonable opportunity and encouragement to take leave, or warn that unused leave will be lost. The statutory provisions protect four weeks for regular-hours workers and the whole accrued statutory entitlement for eligible irregular-hours and part-year workers, until the end of the first full leave year when those duties are met.

Ordinary carry-over of the other 1.6 weeks, eight days on a five-day week, needs an agreement. Extra contractual leave has its own rules. “Use it or lose it” is not the whole law.

When you leave: what is paid out

Statutory leave cannot be bought out during the job. On leaving, accrued untaken statutory leave must be paid, including protected carry-over and after dismissal for gross misconduct. Leave already paid through lawful rolled-up pay is not paid twice. Extra leave has no automatic statutory payout; check the terms.

Excess leave cannot be deducted from final pay without prior written agreement. In Great Britain, the records duty from 6 April 2026 requires holiday records for at least six years from creation; failure can lead to a fine. Keep your own evidence and send your calculation before final payroll. See final pay rights.

Who has the right, and where

A cleaner or delivery rider can legally be a worker despite “self-employed” paperwork. Employees and other workers have statutory holiday rights; agency staff must be allowed paid holiday. Genuinely self-employed people have no statutory entitlement. Check your employment status before accepting an employer’s refusal.

England, Wales and Scotland share the basic holiday rules. Scotland’s temporary tribunal contract-claim exception is explained below.

Northern Ireland uses the Working Time Regulations (Northern Ireland) 2016. Its basic minimum is also 5.6 weeks, capped at 28 days, and its ten bank and public holidays are not automatically extra. The Great Britain 12.07% accrual and rolled-up pay reforms do not apply there. Do not assume a rolled-up payslip line makes a Northern Ireland arrangement lawful; ask the Labour Relations Agency or Advice NI to check it. See our Northern Ireland guide.

If you cannot take it: what to do today

If “we need cover” blocks every request, ask your employer to name dates you can take. Staffing is its responsibility. Keep the exchange in writing, especially if you fear losing shifts for raising the issue.

1. Get the policy and balance. Ask for leave-year dates, policy terms and statutory leave taken. Keep copies accessible after leaving.
2. Request workable dates. Give the required notice. If refused, ask for reasons and alternatives. Save messages and rotas.
3. Ask your representative. Unions can challenge a pattern across the team. Usdaw covers retail, UNISON care and NHS support, Unite and GMB hospitality and logistics, and IWGB gig and outsourced work. Check eligibility for legal help with an existing dispute.
4. Raise a grievance. Set out the entitlement and refusals. Ask for leave, corrected pay or carry-over. Use our grievance guide, but protect your claim deadline while the grievance runs.
5. Get advice. Contact Acas, Citizens Advice, a law centre or your union. Most Great Britain tribunal claims require Acas notification for early conciliation. In Northern Ireland, use the Labour Relations Agency.

Your claim deadline

For most Great Britain tribunal claims about problems on or after 1 October 2026, the starting time limit is six months less one day. For problems before that date, most still have three months less one day. A pay claim normally runs from the date you were paid incorrectly. Refused leave and a series of underpayments need their own deadline assessment. Acas’s time-limit guidance explains the change.

An underpayment on 1 October 2026 has an initial deadline of 31 March 2027; one on 30 September has an initial deadline of 29 December 2026. Timely Acas notification pauses the clock. A grievance does not. Get help calculating the final date.

Scottish tribunal breach-of-contract claims keep the three-month-less-one-day starting limit for breaches before 9 November 2026, changing to six months less one day for breaches on or after that date. Do not apply these Great Britain changes to Northern Ireland. Contact the Labour Relations Agency promptly for the applicable deadline. See how to bring a tribunal claim.

What is changing

1. 1 Apr 2024Hours-based rules

   Applicable Great Britain leave years use 12.07% accrual and permit rolled-up pay for eligible workers.

2. 6 Apr 2026Records duty

   Six-year holiday records requirement in force in Great Britain.

3. 7 Apr 2026Fair Work Agency established

   Establishment is not commencement of its planned holiday pay enforcement function.

4. 1 Oct 2026Longer tribunal limits

   In force for most Great Britain problems from this date, with the Scottish contract-claim exception above.

Questions people ask

Is unlimited holiday legal?

Yes, but it cannot erase statutory paid leave. Whether extra leave is contractual depends on the terms, not the policy’s name.

Are bank holidays extra?

Only if your terms give you that benefit. Employers can count them within the statutory allowance.

Are untaken unlimited days paid on resignation?

Accrued untaken statutory leave must be paid, unless already lawfully paid through rolled-up pay. Extra leave has no automatic statutory payout.

Can your boss refuse dates?

Yes, with the applicable notice. Refusing every workable date is different. Your statutory right must be made usable.

Does the policy cover zero-hours or agency staff?

Check eligibility terms. Statutory rights apply independently. Agency status alone does not qualify you for Great Britain’s 12.07% accrual method.

Should you finish a grievance before contacting Acas?

Do not risk your deadline. A grievance does not pause time. Notify Acas in time in Great Britain; use the Labour Relations Agency in Northern Ireland.

Sources

1. Holiday entitlement, calculation, pay, booking and leaving a job, GOV.UK
2. Working Time Regulations 1998, legislation.gov.uk
3. Employment Rights (Amendment, Revocation and Transitional Provision) Regulations 2023, particularly the carry-over, accrual and rolled-up pay amendments, legislation.gov.uk
4. Holiday pay and entitlement reforms from 1 January 2024, GOV.UK
5. Rolled-up holiday pay, Acas
6. Employment tribunal time limits, Acas, updated 1 October 2026
7. Holiday entitlements, nidirect
8. Working Time Regulations (Northern Ireland) 2016, legislation.gov.uk
9. Plan to Make Work Pay and Employment Rights Act: timeline update, GOV.UK, updated 25 September 2026
10. Holiday pay compliance and enforcement consultation, GOV.UK
11. 2 million workers not getting legal holiday entitlement, TUC, 22 July 2019, analysing Labour Force Survey data for the fourth quarter of 2018