BBC link
The school had allocated Ms Brazel's holiday pay as a percentage of yearly hours worked, while the judges said it should be based on her average weekly pay over a 12-week term.
Other link
The ISM legal team argued right from the start that all workers are entitled to 5.6 weeks holiday pay per year. We made clear that payment for each weeks holiday should be calculated according to section 221-224 of the Employment Rights Act 1996. This stipulates that when payment to employees varies, then the average of the last 12 weeks paid work, prior to taking leave should be used
That's interesting I've working with temps, and they always got a % of hours worked which made up the holiday pay