Full-year entitlement
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How shift worker holiday entitlement works
When shifts vary in length, calculating entitlement in days can be unfair — a 12-hour shift day is worth more than a 6-hour shift day. HMRC and ACAS recommend calculating entitlement in hours for workers with variable shifts.
Formula: Annual entitlement (hours) = 5.6 × average weekly hours
Use a 12-week reference period to calculate the average. If hours vary significantly, use a longer reference period to get a fair average.
Worked examples — shift worker holiday
12-hour shift pattern, 3 days on / 3 days off (average 42 hours/week):
Entitlement: 5.6 × 42 = 235.2 hours per year
Equivalent: 235.2 ÷ 12 = 19.6 days of 12-hour shifts
Variable shifts averaging 30 hours/week (12-week average):
Entitlement: 5.6 × 30 = 168 hours per year
If taking a week off with 4 shifts of 7.5 hours: 4 × 7.5 = 30 hours deducted from balance
Who is this calculator for?
Nurses, paramedics, retail workers, factory operatives, security staff, and any other workers on rotating, compressed, or variable shift patterns. Also useful for employers calculating holiday pay for shift-based teams and for workers checking whether their employer is correctly calculating their leave balance.
Frequently asked questions
How is holiday pay calculated for shift workers?
Holiday pay for shift workers must reflect normal remuneration — not just basic pay. Following Bear Scotland v Fulton and subsequent cases, regular overtime (including voluntary overtime that is regularly worked) should be included in holiday pay calculations for at least the 4 weeks of EU-derived leave. Use a 12-week reference period of actual earnings to calculate the correct rate.
How many hours of holiday is a shift worker entitled to?
Multiply 5.6 weeks by average weekly hours. A worker averaging 40 hours/week is entitled to 5.6 × 40 = 224 hours per year. This is the statutory minimum — your contract may provide more. Calculate the average over 12 weeks (or longer for highly variable hours).
Do I accrue holiday when I am on sick leave?
Yes. Holiday continues to accrue during sick leave (both statutory sick pay periods and longer absences). If you are unable to take your accrued holiday due to sickness, you can carry it forward into the next leave year. For long-term sick leave, the carry-over period is 18 months.
How does a compressed working week affect holiday entitlement?
A compressed week (e.g. 4 × 10-hour days) does not change the total entitlement in hours (5.6 × 40 = 224 hours). However, each day taken uses 10 hours rather than 8, meaning you get fewer “days” off in practice. Some employers grant an additional day to compensate — check your contract.
Can I be required to take my holiday on specific dates as a shift worker?
Yes. Employers can require workers to take holiday at specific times (for example, a factory shutdown) as long as they give notice of at least twice the length of the required leave period. However, they must ensure you can take your full statutory entitlement within the leave year.