Zero-Hours Contract Holiday: Definition, Accrual Rules and Entitlements

Zero-hours contract holiday refers to the statutory annual leave entitlement of workers employed on zero-hours contracts in the UK. Despite having no guaranteed hours, zero-hours workers are entitled to 5.6 weeks of paid annual leave per year under the Working Time Regulations 1998. The leave is accrued based on the hours actually worked and is paid at the worker’s average hourly rate. Zero-hours workers have been the subject of significant legal developments, including the Harpur Trust v Brazel Supreme Court decision, which confirmed that part-year workers (including many zero-hours workers) must receive the full 5.6-week entitlement.

Key Takeaways

• Zero-hours contract workers are entitled to 5.6 weeks of statutory annual leave per year, regardless of their irregular hours
• Leave is accrued based on hours worked and paid at the average hourly rate over the previous 52 weeks
• The Harpur Trust v Brazel decision confirmed that zero-hours workers cannot have their leave pro-rated below the 5.6-week minimum

What Zero-Hours Contract Holiday Means for Employers

Zero-hours contracts are common in the UK, particularly in hospitality, retail and social care. The UK government estimates that approximately 900,000 workers are on zero-hours contracts. Despite the flexibility they offer, these contracts carry significant leave compliance obligations.

For zero-hours workers, annual leave accrues based on the hours they actually work. If a worker works 15 hours in one week and 10 the next, their leave accrual is proportional to those hours. The leave is paid at their average hourly rate, calculated over the previous 52 weeks (or the length of employment if shorter). This creates administrative complexity for employers, as the average rate fluctuates with the worker’s actual hours and pay.

The Harpur Trust v Brazel [2022] Supreme Court decision had significant implications. Before the ruling, many employers calculated leave for zero-hours workers using a 12-week reference period, resulting in a lower entitlement. The Supreme Court held that the Working Time Regulations provide a minimum of 5.6 weeks for all workers, and zero-hours workers must receive the full 5.6 weeks regardless of the weeks they did not work.

In Australia, there is no formal zero-hours contract classification. Casual employees receive a loading in lieu of paid leave, and their leave accrual is based on ordinary hours worked. In the US, zero-hours arrangements are treated as at-will employment, with leave entitlements set by the employer’s policy and state law.

Zero-Hours Contract Holiday Rules by Region

Country	Rule	Detail
UK	Working Time Regulations 1998	5.6 weeks statutory annual leave; accrual based on hours worked; average rate pay; Harpur decision applies
AU	Fair Work Act 2009 (Cth)	No zero-hours classification; casual employees receive loading in lieu of leave
US	FLSA and state laws	No federal annual leave; at-will employment; leave entitlements set by employer policy

How Zero-Hours Contract Holiday Works in Practice

A UK hospitality group employs 40 zero-hours workers across three restaurants. Each worker’s leave is tracked through the HRIS, which calculates accrual based on actual hours worked. When a zero-hours worker, Amir, works 20 hours in Week 1 and 12 hours in Week 2, the system accrues leave proportional to those 32 hours.

At the end of the leave year, Amir has worked 800 hours across 35 weeks. Under the Harpur decision, Amir is entitled to 5.6 weeks of paid annual leave. The leave is paid at Amir’s average hourly rate over the previous 52 weeks, which is calculated at £12.50 per hour. Amir’s 5.6-week entitlement is equivalent to 28 days based on a five-day week, but because Amir works irregular hours, the entitlement is expressed in hours: 800 / 52 x 5.6 = 86.15 hours of paid annual leave.

The employer’s payroll system calculates this automatically, ensuring compliance and avoiding underpayment claims.

Common Mistakes with Zero-Hours Contract Holiday

• Assuming zero-hours workers are not entitled to annual leave because they have no guaranteed hours
• Using a 12-week reference period to calculate leave for zero-hours workers, which is no longer permitted after the Harpur decision
• Not tracking hours worked for zero-hours workers, making it impossible to calculate leave accrual
• Paying holiday at a rate below the worker’s average hourly rate over the previous 52 weeks
• Not communicating the holiday entitlement clearly to zero-hours workers, leading to disputes when leave is requested

FAQ

What holiday are zero-hours workers entitled to?

Zero-hours contract workers in the UK are entitled to 5.6 weeks of statutory annual leave per year, accrual based on hours worked and paid at the average hourly rate over the previous 52 weeks.

How is holiday calculated for zero-hours workers?

Holiday is calculated based on the hours actually worked. The 5.6-week entitlement is expressed in hours proportional to the worker’s actual work pattern. The average hourly rate is used to calculate pay during leave.

Can zero-hours workers take holiday?

Yes. Zero-hours workers can request holiday in the same way as other workers. The employer must grant the leave and pay it at the worker’s average hourly rate. The employer can require notice for leave, but the notice period must be reasonable.