Holiday accrual
Holiday accrual is how a leave balance grows. For a regular week it is usually a share of 5.6 weeks. For irregular hours, from April 2024, it is 12.07% of hours worked. This page is a description of what Shiftbrook records. It is not legal advice.
A regular week
The statutory minimum most workers in the United Kingdom are described as having is 5.6 weeks of holiday in a leave year. Five days a week reaches 28 days, and the figure is capped at 28. Someone who works fewer days gets 5.6 of their own shorter week, not a percentage of 28. A start or finish part-way through the year pro-rates it. Bank holidays can sit inside the 5.6 weeks, or a contract can put them on top. Shiftbrook does not decide that contract. You set the allowance, and the profile shows the working.
The holiday entitlement calculator on this site estimates that statutory figure. It is labelled as an estimate. The allowance you save on the person is the one a leave request is checked against. A request over the balance is blocked unless a manager allows it and writes a note.
Irregular hours
Flag a person as irregular hours and the balance is no longer a lump at the start of the year. It accrues at 12.07% of the hours on approved timesheets in the holiday year. That rate is 5.6 divided by 46.4, which is the April 2024 method for irregular-hours and part-year workers. Hours on a draft or a submitted sheet do not count until the sheet is approved.
Accrual is not pay. Shiftbrook does not calculate holiday pay, and it does not run payroll. The calculator and the Leave page both stop at the time. If you need the statutory sick pay figure, that is a separate calculator, also an estimate.
Sources
Holiday entitlement calculator · Leave · What is a rota · Compressed hours