Under the Working Time Regulations (WTR), workers in the UK have a right to a minimum of 5.6 weeks’ annual leave and are entitled to be paid at the rate of a week’s pay in respect of this leave.
Although holiday pay for workers with variable hours should be based on average weekly pay, many employers adopt the approach of calculating holiday pay on a pro-rata and capped basis, using 12.07% of annualised hours for workers on zero-hours contracts..
In the Harpur Trust case, Mrs Brazel worked for the Trust as a visiting music teacher. Her contract was a permanent zero hours contract and she only worked during school term time. The school year varies between 32 and 35 weeks. Mrs Brazel was only paid by the trust for the work that she performed and was entitled to 5.6 weeks’ annual paid leave, which she had to take during the school holidays.
Prior to 2011, the Trust calculated Mrs Brazel’s holiday pay with reference to her average weeks’ pay over the relevant reference period.
In 2011, the Trust amended the way in which it calculated Mrs Brazel’s holiday pay, in line with ACAS guidance that was issued at the time. The Trust subsequently made three annual payments to Mrs Brazel, calculating her holiday entitlement at 12.07% of her earnings in the preceding school term.
Mrs Brazel brought a claim in the employment tribunal arguing that the Trust’s method of calculating her holiday entitlement meant that she had been underpaid. She argued that her holiday entitlement should be based on her average earnings over a relevant reference period (at the time that reference period was 12 weeks before the annual leave was taken but as from April 2020 the reference period is 52 weeks before the leave is taken).