Part-time workers are entitled to a fair share of bank holiday entitlement, but calculating that share is one of the most common areas of confusion for UK employers. The Working Time Regulations 1998 require that part-time workers are not treated less favourably than full-time workers — including for bank holidays.
This guide explains how to calculate part-time bank holiday entitlement, covers the different allocation methods, and helps you avoid the mistakes that lead to part-time worker claims.
This article is general information, not legal advice.
Key Takeaways
- Part-time workers are entitled to a pro-rata share of bank holiday entitlement
- The Working Time Regulations 1998 require equal treatment
- Two main allocation methods: fixed bank holidays or pro-rata calculation
- If a bank holiday falls on a non-working day, the worker should receive an alternative
- Inconsistent treatment of part-time workers is a common source of legal claims
The Legal Framework
Working Time Regulations 1998
Under the Regulations, every worker is entitled to 5.6 weeks of paid annual leave. This includes bank holidays. Part-time workers must receive the same entitlement on a pro-rata basis.
Part-Time Workers (Prevention of Less Favourable Treatment) Regulations 2000
Part-time workers must not be treated less favourably than comparable full-time workers. This applies specifically to bank holiday entitlement.
Calculating Part-Time Bank Holiday Entitlement
Method 1: Fixed Bank Holidays
Give part-time workers the same number of bank holiday days as full-time workers, regardless of which days they work.
Example: Full-time workers get 8 bank holidays off. Part-time workers also get 8 bank holiday days off.
Pros: Simple to administer Cons: May give part-time workers more bank holidays proportionally than full-time workers
Method 2: Pro-Rata Calculation
Calculate the part-time worker’s bank holiday entitlement based on their working pattern.
Formula: Part-time bank holiday days = (Full-time bank holidays × Part-time days per week) ÷ Full-time days per week
Example: Full-time = 5 days, Part-time = 3 days
- Bank holiday entitlement: (8 × 3) ÷ 5 = 4.8 days
Pros: Precisely proportional Cons: More complex to administer
Method 3: Hour-Based Calculation
Calculate based on hours rather than days.
Formula: Part-time bank holiday hours = (Full-time bank holiday hours × Part-time hours per week) ÷ Full-time hours per week
Example: Full-time = 40 hours/week, Part-time = 24 hours/week
- Bank holiday entitlement: (64 hours ÷ 40) × 24 = 38.4 hours
What Happens When a Bank Holiday Falls on a Non-Working Day?
The Problem
If a part-time worker doesn’t work on Mondays and a bank holiday falls on a Monday, they miss that bank holiday entirely.
The Solution
The part-time worker should receive an alternative day off to compensate for the missed bank holiday. This ensures they receive their full pro-rata entitlement.
Example: Part-time worker works Tuesday, Thursday, Friday. Easter Monday falls on a Monday — they miss it. They should receive an alternative day off.
Legal Basis
The Part-Time Workers Regulations require that part-time workers are not disadvantaged by their working pattern. If a bank holiday falls on a non-working day and no alternative is offered, the worker receives fewer bank holidays proportionally.
Common Scenarios
Employee Works 3 Days Per Week
If full-time workers get 8 bank holidays and the employee works 3 days per week:
Pro-rata entitlement: (8 × 3) ÷ 5 = 4.8 days → round to 5 days
If a bank holiday falls on a day they don’t work, they should receive an alternative day.
Employee Works Mornings Only
For an employee working mornings 5 days per week:
Pro-rata entitlement: Same number of bank holidays, but reduced hours
They receive 8 bank holidays × half-day = 4 full days equivalent.
Employee Works Irregular Hours
For employees with variable schedules:
- Use the average working pattern over the previous 12 weeks
- Calculate the pro-rata entitlement based on the average
- Apply the same alternative day rule for missed bank holidays
Paying Part-Time Workers on Bank Holidays
Salaried Part-Time Workers
Part-time salaried employees receive their normal salary for bank holidays that fall on their working days.
Hourly Part-Time Workers
Hourly part-time workers receive their relevant daily pay for bank holidays that fall on their working days.
Working on a Bank Holiday
If a part-time worker works on a bank holiday, they receive the same penalty rates as full-time workers for the hours they work.
Common Mistakes
Giving Part-Time Workers No Bank Holidays
Some employers assume that because a part-time worker doesn’t work the typical bank holiday days, they’re not entitled. This is wrong — part-time workers are entitled to a pro-rata share.
Not Offering Alternative Days
If a bank holiday falls on a non-working day and no alternative is offered, the part-time worker receives fewer bank holidays proportionally. This breaches the Part-Time Workers Regulations.
Using Different Allocation Methods for Different Workers
Apply the same method consistently. Using one method for some part-time workers and another for others creates discrimination claims.
Not Documenting the Method
Document which method you use and apply it consistently. Inconsistent application is a common source of part-time worker grievances.
Frequently Asked Questions
Are part-time workers entitled to bank holidays?
Yes. Part-time workers are entitled to a pro-rata share of bank holiday entitlement under the Working Time Regulations 1998.
How do I calculate the pro-rata amount?
Use the formula: (Full-time bank holidays × Part-time days per week) ÷ Full-time days per week. Round up if necessary.
What if a bank holiday falls on my day off?
If a bank holiday falls on a day you don’t work, you should receive an alternative day off to compensate. This ensures you receive your full pro-rata entitlement.
Can my employer refuse to give me alternative days?
No. If a bank holiday falls on your non-working day and you don’t receive an alternative, you receive fewer bank holidays proportionally — a breach of the Part-Time Workers Regulations.
Do zero-hours workers get bank holidays?
Zero-hours workers are entitled to bank holiday pay if they have worked enough hours to qualify. The calculation follows the same pro-rata principles.