UK Statutory Annual Leave: Entitlement, Accrual, Carryover and Pay

If you employ staff (or you’re about to hire your first team member), getting UK statutory annual leave right is one of those “must do” basics. It affects payroll, staffing levels, overtime planning, sickness management, and how confident your employees feel about joining (and staying with) your business.

The challenge is that annual leave isn’t just “28 days a year”. Questions come up quickly, like:

• Do bank holidays have to be paid?
• What about part-time staff or irregular hours?
• How does leave accrue during probation?
• Can you stop people carrying leave over?
• What do you pay when someone takes holiday (especially if they do overtime)?

Below we break down the key rules on entitlement, accrual, carry over and holiday pay - from an employer perspective - and the practical steps you can take to reduce disputes and keep your business compliant.

What Is UK Statutory Annual Leave (And Who Gets It)?

UK statutory annual leave is the legal minimum paid holiday entitlement under the Working Time Regulations 1998 (often shortened to the “WTR”).

In simple terms, most workers (including employees, and often “workers” in the legal sense even if not labelled as employees) are entitled to a minimum amount of paid time off each leave year.

As an employer, your key takeaways are:

• Statutory leave is paid leave - it’s not optional and it’s not something you can replace with a higher hourly rate (except in limited, specific scenarios for irregular hours/part-year workers, discussed below).
• It applies to part-time staff too, on a pro-rata basis.
• It starts from day one of employment/engagement.
• Your contract and policies matter, because many of the day-to-day operational questions (booking rules, approvals, carry over limits) are best managed through clear documentation like an Employment Contract and a staff handbook.

If you’re unsure whether someone is an employee, a worker, or genuinely self-employed, it’s worth getting advice early - misclassifying status is a common way small businesses accidentally end up with backdated holiday claims.

How Much Is The Statutory Holiday Entitlement In The UK?

For most workers, the minimum entitlement under UK statutory annual leave is:

5.6 weeks’ paid holiday per leave year

For a full-time employee working 5 days per week, that usually works out as:

28 days per year (5 days × 5.6 weeks)

Can Bank Holidays Be Included?

Yes. Bank holidays can be included within the 28-day minimum. There’s no automatic legal right to have bank holidays off - it depends on what you offer contractually and operationally.

This is where businesses often get caught out. If your contract says “20 days plus bank holidays”, that’s different from “28 days inclusive of bank holidays”. The wording affects both entitlement and how you handle years with different numbers of bank holidays.

It’s worth making this crystal clear in writing, especially if you operate in retail, hospitality, healthcare, or any business that trades on bank holidays. If your wording uses “inclusive” language, make sure you understand what that means in practice: inclusive of bank holidays.

What About Part-Time Staff?

Part-time staff get the same 5.6 weeks but calculated against their working pattern.

For example:

• 3 days per week → 3 × 5.6 = 16.8 days
• 2.5 days per week → 2.5 × 5.6 = 14 days

In practice, you’ll need a sensible approach to rounding and booking in hours vs days, particularly for shift workers.

What If Someone Works Irregular Hours Or Part-Year?

If someone’s hours vary significantly (casual staff, seasonal staff, term-time patterns, etc.), calculating leave in “days” can get messy.

Many employers manage holiday in hours for these arrangements.

Important update for employers: since recent changes to the Working Time Regulations, there are now clearer rules for people who fall into the defined categories of irregular-hours workers and part-year workers. In many cases, their statutory holiday entitlement can be calculated by accruing holiday as 12.07% of hours worked during the relevant pay period (rather than trying to convert everything into “days”).

However, you should still be careful in practice, because the right approach depends on:

• whether the individual genuinely meets the legal definition of an irregular-hours or part-year worker;
• how your leave year is set up;
• how you record working time and holiday taken; and
• how you calculate holiday pay where earnings vary.

If you rely heavily on casual labour, it’s worth getting your approach reviewed - a small admin shortcut can turn into a large backdated liability.

How Does Annual Leave Accrue (And Can You Control When It’s Taken)?

Even though statutory holiday is an annual entitlement, employees accrue leave over time - especially relevant for new starters, leavers, and those on variable hours.

Accrual For New Starters

A typical (and sensible) approach is to let leave accrue monthly in the first year.

For a full-time employee entitled to 28 days per year, that’s roughly:

• 2.33 days per month (28 ÷ 12)

This can be written into your contract and reinforced in your policies. If you don’t document it, you may still be able to manage leave operationally, but it’s harder to enforce consistently.

Can You Stop Staff Taking Leave During Busy Periods?

You can manage holiday requests - you don’t have to approve every request automatically. The WTR allows employers to require leave to be taken (and to refuse leave on certain dates), as long as you follow the statutory notice rules and act reasonably.

In broad terms:

• if you want an employee to take holiday on particular dates, you generally need to give notice of at least twice the length of the leave you want them to take; and
• if you want to refuse a holiday request, you generally need to give counter-notice at least equal to the length of the requested leave.

For small businesses, this is often essential. Imagine a café where both baristas book the same weekend off, or a trades business where your only qualified supervisor is away during a major project.

A good holiday policy should cover:

• how to request leave;
• minimum notice required;
• how you approve competing requests;
• blackout periods (if any); and
• whether you can require leave to be taken at certain times (e.g. Christmas shutdown).

This kind of rule-set usually lives in a handbook and supporting Workplace Policy, so you can update it without rewriting every contract.

If you’re looking at mandated shutdowns or directing holiday (common for manufacturing, professional services, and construction), it’s also worth understanding what UK law allows employers to do when dictating holidays.

Carry Over Rules: When Can Employees Carry Leave Into The Next Year?

Carry over is where many small businesses run into disputes - usually not because you’re trying to do the wrong thing, but because you haven’t set clear rules early.

As a starting point:

• Statutory leave is generally intended to be taken within the leave year.
• Some carry over is allowed in specific circumstances.
• Contractual leave above the statutory minimum can have different carry-over rules (if you clearly state them).

Common Situations Where Carry Over May Apply

Carry over commonly becomes relevant where an employee couldn’t realistically take their leave, such as:

• Long-term sickness (where taking annual leave wasn’t possible or appropriate)
• Family-related leave (e.g. maternity leave)
• Where the employer didn’t give a reasonable opportunity to take leave (for example, excessive workload, or refusing leave throughout the year)

From an employer perspective, the risk is this: if your business culture or rostering effectively prevents people taking leave, you could end up with stacked-up leave liabilities (and possibly historic claims).

Practically, one of the key compliance points is making sure employees are clearly informed of their entitlement and are encouraged (and allowed) to take it. If you don’t do that, statutory leave - particularly the core 4 weeks derived from EU principles - can be carried forward and may accumulate until the worker has had a genuine chance to take it.

How To Reduce Carry Over Disputes In Practice

To keep things clean and predictable, many small businesses do the following:

• Define the leave year clearly (e.g. calendar year, tax year, or start date anniversary).
• Set a carry over limit (where allowed), such as “up to 5 days can be carried over and must be used by 31 March”.
• Use HR or payroll reminders mid-year and in the final quarter to prompt employees to book leave.
• Record refusals/approvals consistently (so you can show staff had a real chance to take leave).

If you’re not already doing it, documenting these rules in a handbook is a practical step - especially as your team grows and you need consistent decisions across multiple managers. Many businesses build this into a Staff Handbook so managers aren’t making it up as they go.

Holiday Pay: What Do You Pay When Someone Takes Annual Leave?

Holiday pay sounds simple until you have overtime, commission, bonuses, or irregular hours in the mix.

The general principle is that holiday pay should reflect what the worker would normally earn if they were working - so they’re not financially discouraged from taking leave.

Basic Holiday Pay (Fixed Hours And Fixed Pay)

If your employee has normal working hours and a fixed salary or hourly rate, holiday pay is usually straightforward: you pay their usual rate for the hours/days they would have worked.

Holiday Pay Where Pay Varies (Overtime, Commission, Irregular Hours)

If pay varies, holiday pay calculations can get more technical. You may need to use an averaging method over a reference period to calculate “normal” pay (commonly using a 52-week reference period that ignores weeks with no pay).

Common variable elements include:

• regular overtime
• results-based commission
• shift allowances
• some types of bonuses

The rules here can depend on the worker’s pattern and what counts as “normal remuneration”. If you’re unsure, it’s smart to have payroll processes reviewed - holiday pay mistakes are a frequent source of underpayment claims.

Can You Use “Rolled-Up” Holiday Pay?

Traditionally, “rolled-up” holiday pay (paying an uplift instead of paying holiday when taken) was high-risk and generally discouraged for most staff.

However, the law now allows rolled-up holiday pay for certain defined categories - particularly irregular-hours and part-year workers - provided it is calculated and clearly shown as a separate item (often at 12.07%) on payslips.

It’s still not something you should implement casually. If you get it wrong (for example, applying it to workers who don’t fall within the definitions, or failing to document it properly), you can end up with underpayment risk and disputes.

If you’re considering rolled-up holiday pay, get advice and document it carefully in the contract and payroll approach.

What About Bank Holidays And “Day In Lieu” (TOIL)?

If you require staff to work on a bank holiday, what you owe them depends on:

• their statutory entitlement overall (5.6 weeks);
• what your contract says about bank holidays; and
• whether you offer enhanced pay or time off in lieu (TOIL).

It’s common to offer TOIL, but make sure it’s clearly documented and actually tracked - otherwise it becomes an informal “promise” that’s hard to manage at scale. If TOIL is part of your approach, it can help to align it with your rules on day in lieu.

Also, watch out for the practical issue where a bank holiday falls on someone’s non-working day. If your contracts use “inclusive of bank holidays” wording, you’ll want consistency in how you apply entitlement: non-working day falls on a bank holiday.

Practical Employer Checklist: How To Stay Compliant And Avoid Leave Disputes

Once you understand the legal baseline, the real win for a small business is building a process that’s easy to follow - so you’re not spending your evenings dealing with holiday arguments.

1) Set A Clear Leave Year And Booking Process

Decide your leave year (calendar year is common, but not essential) and set out:

• how far ahead leave must be requested;
• who approves it;
• what happens when too many people request the same dates; and
• any peak-time restrictions (if genuinely necessary for operations).

2) Make Entitlement Clear In Writing

This is where disputes usually start: people simply have different assumptions.

Your written terms should confirm:

• total annual leave entitlement;
• whether bank holidays are included or extra;
• how part-time entitlement is calculated (hours or days);
• carry over rules; and
• what happens on termination (payment in lieu and deductions for overtaken leave).

Most businesses cover the essentials in an Employment Contract and then add operational detail in policies.

3) Track Leave Properly (Especially For Irregular Hours)

A spreadsheet is better than nothing, but as soon as you have multiple teams, shift patterns, or variable hours, you want a system that can confidently show:

• how entitlement was calculated;
• how much leave was taken;
• what was approved vs refused; and
• what remains at year end.

This is not just admin - it’s evidence if there’s ever a complaint or tribunal claim.

4) Handle Leavers Cleanly (And Don’t Forget The Final Payslip)

When someone leaves, you’ll normally need to calculate:

• leave accrued up to the termination date;
• leave taken; and
• any balance owed (or overtaken leave to deduct, if your contract allows it).

Not documenting deduction rights can create awkward conversations and payroll errors. This is another reason having properly drafted terms matters.

5) Review Your Approach When You Change Working Patterns

Promotions, shift pattern changes, flexible working, part-time conversions, and seasonal staffing all affect holiday calculations. Each time you change someone’s working arrangement, it’s worth checking whether:

• entitlement is being recalculated correctly;
• holiday booking still works operationally; and
• your documentation needs updating.

If you’re making broader changes across the team, this may be a good time to refresh your Workplace Policy documents so everyone is following the same rules.

Key Takeaways

• UK statutory annual leave is a legal minimum under the Working Time Regulations 1998, and it applies from day one for most workers.
• The minimum entitlement is 5.6 weeks per leave year (usually 28 days for a full-time employee working 5 days a week), and bank holidays can be included if your contract says so.
• Part-time staff receive holiday on a pro-rata basis, and irregular-hours/part-year arrangements should be calculated using the correct legal method (often hours-based) and properly documented.
• Holiday often accrues over time for new starters, and you can manage leave requests - but your approval/refusal process should follow the statutory notice rules and be clear and consistent.
• Carry over is a common source of disputes; reduce risk by defining the leave year, setting lawful carry-over rules, and ensuring staff genuinely have the chance to take leave.
• Holiday pay can be complex where pay varies (overtime/commission/allowances), so it’s worth reviewing payroll calculations before a problem arises.
• Clear documentation in an Employment Contract and handbook policies helps you stay compliant and avoid costly misunderstandings.

If you’d like help reviewing your holiday entitlement wording, carry over rules, or holiday pay approach, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.