Employee Leave Entitlements in the United Kingdom: Employment Rights Act 1996 Guide for Employers

Managing employee leave correctly is one of the most important — and most misunderstood — aspects of payroll compliance in the United Kingdom. The Employment Rights Act 1996 (Employment Rights Act 1996), Act 75 of 1997, sets out the minimum leave entitlements that every employer must provide. Getting it wrong can lead to disputes at the CCMA, penalties from the GOV.UK, and unhappy employees.

This guide covers every type of leave prescribed by the Employment Rights Act 1996, how to calculate pro-rata entitlements, what happens to leave on termination, and how public holidays interact with annual leave.

Annual Leave

Annual leave is the most common form of leave and the one employees ask about most frequently. Under the Employment Rights Act 1996, every employee is entitled to a minimum of 15 working days of annual leave per year if they work a five-day week, or 18 working days if they work a six-day week. This equates to three weeks of leave per year.

An alternative way to express the entitlement is 1 day of annual leave for every 17 days worked, or 1 hour for every 17 hours worked. This method is especially useful for employees who work irregular hours or part-time schedules.

Key Rules for Annual Leave

• Annual leave accrues from the first day of employment — there is no qualifying period.
• An employer must grant annual leave within 6 months of the end of the annual leave cycle (the 12-month period starting from the employee's start date or anniversary).
• Annual leave may not coincide with sick leave, maternity leave, or notice periods (unless the employee agrees in the case of notice).
• The employer may not pay an employee instead of granting leave, except on termination of employment.
• If a public holiday falls during an employee's annual leave, that day does not count as annual leave — it is a paid public holiday.

Calculating Pro-Rata Annual Leave

When an employee has not completed a full year of service — for example, if they started mid-year or are leaving before their anniversary — you need to calculate their leave entitlement on a pro-rata basis.

The simplest formula is:

Pro-rata leave = (Days worked / 17) (using the 1-in-17 accrual rate)

For a five-day-week employee who has worked 6 months (approximately 130 working days):

Pro-rata leave = 130 / 17 = 7.65 days (typically rounded to 7.5 or 8 days depending on company policy)

Sick Leave

Sick leave under the Employment Rights Act 1996 operates on a 3-year cycle. During each 3-year cycle, an employee is entitled to the number of days they would normally work in 6 weeks.

• For a 5-day week employee: 30 days of sick leave over 3 years
• For a 6-day week employee: 36 days of sick leave over 3 years

During the first 6 months of employment, the entitlement is limited to 1 day of sick leave for every 26 days worked. After the first 6 months, the full cycle entitlement applies.

Medical Certificates

An employer may require a medical certificate if the employee is absent for more than 2 consecutive days, or if the employee is absent on more than 2 occasions during an 8-week period. Without a valid medical certificate in these circumstances, the employer is not obliged to pay sick leave.

Family Responsibility Leave

Employees who have been employed for longer than 4 months and who work at least 4 days per week are entitled to 3 days of paid family responsibility leave per year. This leave may be taken when:

• The employee's child is born
• The employee's child is sick
• There is a death of the employee's spouse or life partner, parent, adoptive parent, grandparent, child, adopted child, grandchild, or sibling

Family responsibility leave is not cumulative — unused days lapse at the end of the annual leave cycle. Employers may require reasonable proof of the event (e.g. a birth certificate, death notice, or medical certificate for a sick child).

Maternity Leave

Under the Employment Rights Act 1996, a pregnant employee is entitled to at least 4 consecutive months (approximately 17 weeks) of maternity leave. The key rules are:

• Maternity leave may begin up to 4 weeks before the expected date of birth, or earlier if a medical practitioner or midwife certifies it is necessary.
• An employee may not work for 6 weeks after the birth, unless a medical practitioner or midwife certifies she is fit to do so.
• An employee who has a miscarriage during the third trimester or who bears a stillborn child is entitled to maternity leave for 6 weeks after the event.
• The Employment Rights Act 1996 does not require paid maternity leave — however, employees can claim National Insurance maternity benefits (up to 66% of earnings, subject to the National Insurance ceiling) during this period.

Parental Leave

The Labour Laws Amendment Act of 2018 introduced parental leave, which came into effect on 1 January 2020. Under this amendment:

• An employee who is a parent of a child is entitled to 10 consecutive days of unpaid parental leave when the child is born.
• Parental leave applies to all parents, regardless of gender — including fathers, same-sex partners, and adoptive parents.
• The employee must notify the employer in writing at least 1 month before the expected date of birth (where reasonably possible).
• Parental leave begins on the date the child is born.

Note that parental leave is unpaid under the legislation, but employees may claim from the National Insurance during this period. Many employers choose to offer paid parental leave as a benefit to attract and retain talent.

Adoption Leave and Commissioning Parental Leave

The 2018 amendments also introduced specific leave entitlements for adoptive parents and commissioning parents (in surrogacy arrangements):

• Adoption leave: An employee who adopts a child below the age of 2 is entitled to 10 consecutive weeks of unpaid adoption leave, beginning on the date the child is placed with the employee.
• Commissioning parental leave: A commissioning parent in a surrogacy arrangement is entitled to 10 consecutive weeks of unpaid leave, beginning on the date the child is born.
• Where there are two adoptive parents, one parent is entitled to adoption leave (10 weeks) and the other to parental leave (10 days).

As with parental leave, adoption leave and commissioning parental leave are unpaid, but National Insurance benefits may be claimed.

Unpaid Leave

The Employment Rights Act 1996 does not specifically regulate unpaid leave beyond the provisions for parental, adoption, and commissioning parental leave. However, in practice, unpaid leave may arise in several situations:

• When an employee has exhausted all paid leave entitlements and needs additional time off
• When an employee takes extended leave by agreement with the employer (e.g. for travel or study)
• During short-time or lay-off situations (subject to the statutory redundancy consultation rules)

Unpaid leave should be agreed upon in writing. During unpaid leave, the employment relationship continues — the employee is still employed, but no salary is paid and no leave accrues.

Leave on Termination of Employment

When an employee's employment ends — whether through resignation, dismissal, or retrenchment — the employer must pay out any accrued but untaken annual leave. This is a legal requirement under the Employment Rights Act 1996.

The calculation is straightforward:

Leave payout = (Unused leave days) x (Daily rate)

Where the daily rate is the employee's monthly salary divided by the average number of working days per month (typically 21.67 for a 5-day week).

Public Holidays and Leave

the United Kingdom has 12 public holidays per year. Under the Employment Rights Act 1996:

• An employer may not require an employee to work on a public holiday, except by agreement.
• If a public holiday falls on a day the employee would normally work, they must be paid their normal wage for that day.
• If the employee works on a public holiday, they must be paid at double their normal daily rate.
• If a public holiday falls on a Sunday, the following Monday is observed as the public holiday.

Public holidays do not reduce the employee's annual leave entitlement. If a public holiday falls during a period of annual leave, that day is counted as a public holiday — not a leave day.

Employment Rights Act 1996 Compliance Checklist for Employers

To ensure you are meeting your legal obligations regarding employee leave, use this checklist:

• Maintain accurate leave records for every employee — the Employment Rights Act 1996 requires these to be kept for 3 years after the employee's departure.
• Ensure employees take their annual leave within 6 months of the end of each leave cycle.
• Track sick leave on a 3-year cycle basis, not annually.
• Grant family responsibility leave to qualifying employees without unreasonable delay.
• Provide written documentation of all leave policies in the employment contract or company policy handbook.
• Pay out accrued annual leave on termination of employment.
• Show leave balances on payslips — while not strictly required by the Employment Rights Act 1996, it is best practice and helps prevent disputes.

Common Leave Mistakes Employers Make

• Paying out leave instead of granting it: The Employment Rights Act 1996 prohibits "buying out" annual leave during employment. Leave must be taken as actual time off.
• Using a "use it or lose it" policy incorrectly: While the Employment Rights Act 1996 requires leave to be taken within 6 months of the cycle end, outright forfeiture without the employer having offered reasonable opportunity to take leave can be challenged.
• Not adjusting for public holidays: Deducting annual leave on a public holiday is incorrect and can lead to CCMA disputes.
• Confusing parental leave with family responsibility leave: These are separate entitlements. A father cannot be told to use family responsibility leave instead of parental leave when his child is born.
• Not tracking sick leave cycles: Sick leave resets every 3 years from the employee's start date. Using a calendar year approach is incorrect.

Summary of Leave Entitlements

Managing leave correctly is essential for compliance and employee satisfaction. Use our leave calculator to quickly determine pro-rata entitlements, and generate compliant payslips that show leave balances with our free payslip generator. For more on the deductions that appear on payslips, read our guide to National Insurance contributions and how PAYE is calculated.