Annual leave entitlement in the UK is one of the most common HR processes businesses deal with, but calculating holiday entitlement is not always as straightforward as it first appears.
The basic rule is familiar: most workers are legally entitled to 5.6 weeks of paid holiday each year. For someone working five days a week, that normally means 28 days. But things become more complicated when employees work part-time, have irregular hours, work for only part of the year, start part way through a leave year or receive additional contractual holiday.
For UK employers, understanding how annual leave works is important not only for giving employees the correct entitlement, but also for keeping accurate records and managing leave consistently.
Here’s what employers need to know.
What Is Annual Leave Entitlement In The UK?
annual leave entitlement in the UK is the amount of paid holiday a worker is entitled to take during a leave year.
In the UK, most workers are entitled to at least 5.6 weeks of paid statutory holiday per year. For a worker who normally works five days each week, this is 28 days.
Employers can provide more than the statutory minimum as part of an employment contract or company benefits package.
For example, a business might offer:
- 28 days including bank holidays
- 28 days plus bank holidays
- 30 days plus bank holidays
- Another contractual holiday arrangement
The important distinction is between statutory annual leave and any additional contractual holiday provided by the employer.
How Much Annual Leave Are Employees Entitled To?
For most full-time workers working five days a week, the statutory minimum is:
5 days × 5.6 weeks = 28 days
The statutory entitlement is capped at 28 days.
This means someone working six days a week does not automatically receive 33.6 days of statutory holiday. The statutory entitlement remains capped at 28 days.
Employers can, of course, provide additional contractual holiday on top of this minimum.
Annual Leave for Part-Time Employees
Part-time workers are entitled to the same 5.6 weeks of statutory holiday as full-time workers.
However, because they work fewer days, their entitlement in days will be lower.
For example, an employee working three days a week would receive:
3 × 5.6 = 16.8 days
So their statutory entitlement would be 16.8 days of paid holiday for a full leave year.
This is an important point for employers because part-time employees should not simply be given the same number of holiday days as full-time employees.
The entitlement should reflect their working pattern.
What About Employees Who Work Irregular Hours?
Calculating annual leave can become more complicated for employees whose working hours change from one pay period to another.
For leave years beginning on or after 1 April 2024, irregular-hours and part-year workers use a specific accrual system based on the hours they have worked. Their statutory entitlement can be up to 5.6 weeks.
This is one reason why managing annual leave manually can become difficult.
A business may need to consider:
- Hours worked
- Pay periods
- Holiday accrued
- Holiday already taken
- Remaining entitlement
- Holiday pay
For employers with variable-hours employees, having a clear process for tracking this information can make holiday management much easier.
What Is a Leave Year?
A leave year is the period during which an employee’s statutory holiday entitlement is calculated and taken.
An employer should tell workers when their leave year starts and ends. For example, a business might use:
1 January to 31 December
Alternatively, an organisation might use another 12-month period.
If the leave year is not specified in the contract, specific default rules can apply.
Having a clearly defined leave year makes it easier for both employees and HR teams to understand:
- How much holiday an employee receives
- When entitlement resets
- How much leave remains
- Whether unused leave can be carried over
- When employees need to use their holiday
What Happens When Someone Starts Part Way Through the Year?
Employees who start part way through a leave year may not have the same remaining entitlement as someone who has been employed for the entire leave year.
Employers need to calculate the employee’s entitlement for the relevant period.
For regular-hours workers, an accrual system can be used during the first year. Under this approach, an employee can build up one-twelfth of their annual entitlement each month.
For example, if an employee receives 24 days of annual leave for a full year, their monthly accrual under a simple one-twelfth system would be:
24 ÷ 12 = 2 days per month
The actual calculation can depend on the employee’s circumstances and the employer’s leave arrangements, so businesses should make sure their approach is appropriate.
Are Bank Holidays Included in Annual Leave?
This is a common source of confusion.
UK employers can include bank holidays within the statutory 5.6 weeks of annual leave. They can also provide bank holidays in addition to the statutory minimum.
For example, an employer might offer:
28 days including bank holidays
or:
28 days plus bank holidays
These are different arrangements.
Employers should make their holiday entitlement clear in the employment contract and company policies.
Part-time workers also need to be treated correctly when bank holidays fall on days they do not normally work. An employer cannot simply make a part-time worker use a bank holiday as part of their entitlement when that day is not one of their normal working days.
Does Annual Leave Build Up During Sick Leave?
Yes.
Workers can continue to accrue holiday while they are off sick. Holiday entitlement can also continue to build up during certain types of statutory leave, including maternity, paternity and adoption leave.
This means an employee being absent from work does not necessarily mean their annual leave entitlement stops accumulating.
HR teams therefore need to consider absence when managing holiday balances.
Can Employees Carry Annual Leave Over?
Carry-over depends on the circumstances and the relevant agreement.
A worker may be able to carry some statutory holiday into the next leave year where an employment contract or another relevant agreement allows it.
There are also circumstances where holiday can carry over because the employer did not allow or encourage the worker to take their entitlement, or did not properly inform them that unused holiday could be lost.
Businesses should therefore have a clear holiday policy explaining:
- The leave year
- How employees request holiday
- Any carry-over rules
- Deadlines for using holiday
- What happens to unused holiday
- How additional contractual holiday is treated
How Is Holiday Pay Calculated?
Holiday entitlement and holiday pay are closely connected, but they are not exactly the same thing.
For most workers, holiday must be paid.
The method used to calculate holiday pay depends on the worker’s working pattern and how they are paid. For example, regular-hours workers with fixed pay generally receive their normal weekly pay for a week’s holiday. Different rules apply to workers with irregular hours or part-year working patterns.
For irregular-hours and part-year workers, holiday pay is generally based on average pay over the previous 52 weeks, subject to the relevant rules.
Employers should make sure their payroll and HR processes work together so that holiday entitlement and holiday pay are handled correctly.
What Is Rolled-Up Holiday Pay?
Rolled-up holiday pay is a method where holiday pay is paid alongside normal pay rather than when the worker takes their holiday.
For eligible irregular-hours and part-year workers, employers can choose to use rolled-up holiday pay under the current rules.
Where it is used, holiday pay must be calculated at a rate of at least 12.07% of the worker’s total pay in the relevant pay period and shown separately on the payslip.
Employers should be careful not to apply rolled-up holiday pay to regular-hours workers where it is not permitted.
What Happens to Holiday When an Employee Leaves?
When an employee leaves, employers need to calculate their accrued statutory holiday entitlement.
If the employee has unused statutory holiday, they must generally be paid for it when they leave.
If an employee has taken more holiday than they have accrued, an employer may be able to deduct the relevant amount from final pay if this has been agreed in the contract or in writing beforehand.
This is another reason why maintaining accurate holiday records throughout employment matters.
Employers Must Keep Annual Leave Records
Holiday management is not just about approving requests.
From 6 April 2026, employers must keep records of annual leave and holiday pay for at least six years. Records should include holiday taken, holiday carried over, holiday pay and relevant payments in lieu.
Employers can choose how they maintain these records. This could be through an online HR system, spreadsheet or another suitable method.
However, the larger the workforce becomes, the more difficult manual record keeping can be.
Common Annual Leave Management Problems
Businesses can run into several problems when annual leave is managed manually.
Incorrect Holiday Calculations
Different working patterns can make entitlement calculations more complicated.
Outdated Holiday Balances
If leave is not recorded promptly, employees and managers may see incorrect balances.
Missed Carry-Over Information
Without clear records, it can be difficult to identify holiday carried over from a previous leave year.
Poor Visibility
HR teams may have to check several spreadsheets or systems to understand an employee’s current entitlement.
Inconsistent Approval Processes
If holiday requests are handled informally, managers may apply different processes across teams.
Difficulty Maintaining Records
As employee numbers increase, manually maintaining accurate annual leave records can become increasingly time-consuming.
How HR Software Can Make Annual Leave Management Easier
HR software can bring holiday management into one central system.
Depending on the platform, HR teams may be able to:
- Set annual leave allowances
- Manage employee holiday balances
- Record leave requests
- Approve or reject requests
- Manage leave taken
- Monitor remaining entitlement
- Manage different employee working patterns
- Track carry-over
- Keep holiday records
- Give employees visibility of their available leave
This can reduce the amount of manual administration involved in managing annual leave.
How Root HR Helps Manage Annual Leave
Root HR brings leave management together with employee records and wider HR processes.
HR teams can manage employee holiday information alongside other employment details rather than relying on separate spreadsheets.
This can help businesses keep better visibility of:
- Employee leave entitlement
- Holiday taken
- Remaining balances
- Leave requests
- Approval workflows
- Employee working arrangements
Because leave management sits alongside other employee information, HR teams can manage annual leave as part of the wider employee lifecycle.
For growing UK businesses, this can make it easier to maintain consistent records and reduce the administrative workload involved in managing employee leave.
Annual Leave Management Checklist for UK Employers
Before reviewing your annual leave process, ask:
- Is the company’s leave year clearly defined?
- Does the employment contract explain holiday entitlement?
- Are part-time employees receiving the correct entitlement?
- Are irregular-hours workers being handled correctly?
- Are bank holidays clearly explained?
- Are holiday requests recorded consistently?
- Are holiday balances kept up to date?
- Is carry-over tracked?
- Are holiday pay calculations handled correctly?
- Are annual leave records being retained for the required period?
- Can HR quickly see an employee’s holiday history and remaining entitlement?
If several of these processes are handled manually, it may be worth reviewing whether your current HR system can support them more efficiently.
Final Thoughts
Annual leave entitlement in the UK is more than simply giving employees a set number of days each year.
Employers need to consider working patterns, part-time employees, irregular hours, bank holidays, leave years, holiday pay, carry-over and record keeping.
For a small workforce, these processes may be manageable manually. As the business grows, however, keeping accurate holiday information across spreadsheets and separate records can become increasingly difficult.
A centralised HR system can make it easier to manage employee leave, maintain accurate records and give HR teams better visibility of holiday information.
Good annual leave management gives both employees and employers clarity ; employees can see what they are entitled to, while HR teams can manage requests, balances and records with greater confidence.
This article is for general information and does not constitute legal advice. Annual leave entitlement in the UK and holiday pay rules can vary depending on a worker’s circumstances. Employers should refer to current GOV.UK and Acas guidance for specific situations.