Public Holiday Pay Calculator In New Zealand: How To Calculate Pay

If you employ staff in New Zealand, public holidays can be one of those payroll areas that feels simple until you’re actually staring at a timesheet and wondering what you’re meant to pay.

Between “time and a half”, “relevant daily pay”, irregular rosters, and alternative holidays (lieu days), it’s easy for small business owners to get caught out - especially when your team works shifts, varies their hours, or earns commissions or allowances.

This guide breaks down a practical public holiday pay calculator New Zealand approach, so you can confidently work out what your employee should be paid when:

• they don’t work the public holiday but it would have been a normal working day,
• they work the public holiday,
• they’re entitled to an alternative holiday,
• their hours and pay vary week to week,
• the public holiday occurs during annual leave, sick leave, or other leave, and
• employment ends and you need to deal with any unused alternative holidays.

We’ll keep this practical, employer-focused, and aligned with the Holidays Act 2003 (the key law that governs public holiday entitlements in NZ). This article is general information only and isn’t legal advice.

What Counts As A Public Holiday And When Do You Have To Pay?

In New Zealand, employees can be entitled to paid public holidays if the public holiday falls on a day that would “otherwise be a working day” for them.

That “otherwise working day” concept is the first decision point in any public holiday pay calculator New Zealand workflow.

Step 1: Is It An “Otherwise Working Day” For That Employee?

As an employer, you’ll usually look at things like:

• the employee’s roster or agreed work pattern
• their employment agreement terms
• the days they typically work
• whether they were scheduled to work that day (or likely would have been, if not for the public holiday)

If the public holiday is not an otherwise working day, generally you don’t have to pay the employee for that day (even though it’s a public holiday).

If it is an otherwise working day, then you generally must pay them - and the exact method depends on whether they worked or didn’t work on the day.

Tip: This is one reason it’s worth having clear, tailored Employment Contract terms around hours, rosters, and how variations are managed. It can prevent disputes when public holidays roll around.

How To Calculate Public Holiday Pay If The Employee Doesn’t Work

If the public holiday is an otherwise working day for the employee, and they do not work on the public holiday, you generally pay them either:

• Relevant Daily Pay (RDP), or
• Average Daily Pay (ADP) (only if RDP can’t be worked out or isn’t practical).

This is the core “pay the employee what they would have earned” principle under the Holidays Act 2003.

Relevant Daily Pay (RDP): The Default Method

Relevant daily pay is what the employee would have earned if they had worked that day. It can include more than just base wages.

Depending on their role and pay structure, RDP may include:

• their normal hourly wage or salary portion for that day
• regular allowances (if they would have been paid that day)
• incentive-based payments (including commission) if they are a regular part of what the employee would have earned on that day
• overtime, but only if overtime would have been worked on that day as part of their usual pattern

In practice, employers often get stuck here when pay varies due to commissions, bonuses, or unpredictable shift lengths. If that sounds like your workplace, it’s worth reviewing how your payroll system and policies treat variable earnings. A clear Workplace Policy can help keep your approach consistent (and defensible) across the team.

Average Daily Pay (ADP): The Backup Method

Average daily pay is used when RDP is not possible or not practical to calculate. ADP is basically an average of the employee’s gross earnings per day over the relevant period, calculated in line with the Holidays Act rules.

Common examples where ADP may be needed include:

• highly variable hours (e.g. a genuinely irregular roster)
• highly variable earnings (e.g. fluctuating piece rates or commission)
• where it’s unclear what they “would have worked” on that day

Even though ADP is meant to be practical, you still need to apply it carefully. If you use ADP too loosely (or use it when RDP is actually easy to calculate), you can underpay or overpay staff, which creates payroll risk and relationship issues.

A Simple “Calculator” Checklist For Not Worked Public Holidays

If you want a quick internal checklist that functions like a public holiday pay calculator New Zealand system, use this:

1. Confirm the day is a public holiday (and note if it’s a Mondayised public holiday).
2. Decide if it’s an otherwise working day for that employee.
3. If yes, calculate RDP (what they would have earned for the day).
4. If RDP isn’t possible or practical, calculate ADP.
5. Pay that amount for the day (as paid public holiday).
6. Keep records showing how you decided it was an otherwise working day and how you calculated the pay.

How To Calculate Public Holiday Pay If The Employee Works (Time And A Half)

If an employee works on a public holiday and it would otherwise be a working day for them, you’ll usually have two obligations:

• pay them at least time and a half for the hours they actually worked on the public holiday, and
• provide an alternative holiday (a paid day off later).

This is where payroll mistakes commonly happen: time and a half gets paid, but the alternative holiday entitlement is overlooked or recorded incorrectly.

Time And A Half: What Does It Apply To?

“Time and a half” means the employee must be paid at least 1.5 times their relevant pay rate for the actual hours worked on the public holiday.

It’s not just their base hourly rate. Depending on how they’re paid, you may need to consider:

• their usual pay rate for those hours
• any allowances that would normally apply while working those hours
• whether the employee is salaried and how you calculate their hourly equivalent for the public holiday hours worked

If your staff regularly work extra hours or your business relies on peak trading days, it’s worth making sure you’ve got a clear overtime framework, including how you treat penalty rates and public holidays. The approach should align with your agreements and the Holidays Act. (If you’re dealing with overtime generally, this working overtime guide is a helpful starting point.)

Worked Public Holiday “Calculator” Steps

1. Confirm the employee worked on a public holiday (and record start/finish times).
2. Confirm whether the day is an otherwise working day for that employee.
3. Calculate public holiday hours worked (actual hours on that date).
4. Calculate pay at 1.5x for those hours.
5. If it was otherwise a working day, add an alternative holiday entitlement to the employee’s leave balance.

What If The Employee Works On A Public Holiday That Isn’t An Otherwise Working Day?

This can happen in businesses with flexible rosters (e.g. retail, hospitality, logistics) where someone agrees to pick up a shift that they don’t normally work.

Generally, an employee who works on a public holiday is still entitled to be paid at least time and a half for the hours worked. However, the alternative holiday entitlement depends on whether it is an otherwise working day for them.

Because the “otherwise working day” test can be fact-specific, it’s a good idea to get advice if you’re making frequent roster changes around public holidays or if you’ve had inconsistent past practices.

Alternative Holidays: When They Apply And How To Pay Them

An alternative holiday (sometimes called a “lieu day”) is a paid day off that an employee can take later, but it’s not the same thing as “time off in lieu” arrangements for overtime.

You should think of alternative holidays as the Holidays Act mechanism that compensates an employee for working on a public holiday that would otherwise have been a working day.

When Does An Employee Get An Alternative Holiday?

In most cases, an employee is entitled to an alternative holiday if:

• they work on a public holiday, and
• the public holiday falls on a day that would otherwise be a working day for them.

It’s important to track alternative holidays separately from annual leave and sick leave, so your records are clean and you can show compliance if questions come up later.

How Do You Pay An Alternative Holiday When It’s Taken?

When the employee takes the alternative holiday later, you pay them what they would have earned had they worked that day. In practice, that means paying:

• RDP for the day the alternative holiday is taken, or
• ADP if RDP can’t be determined or isn’t practical.

So, the alternative holiday is paid based on the day it’s taken - not the day it was earned.

What If Employment Ends And The Employee Has Unused Alternative Holidays?

If an employee has unused alternative holidays when employment ends, the Holidays Act sets out how they must be dealt with (including paying them out). Because the calculation can depend on what the employee would have earned on the days they might otherwise have taken those alternative holidays, it’s important to get the final pay calculation right and keep clear records.

Alternative Holiday “Calculator” Steps

1. Confirm the alternative holiday balance (earned by working a public holiday).
2. Agree on the date the employee will take it.
3. Calculate the pay for that day using RDP (or ADP if needed).
4. Record the day as an alternative holiday taken and reduce the balance accordingly.

If your team also uses “time off in lieu” for overtime or extra hours, make sure you’re not mixing the two concepts up in payroll. Alternative holidays are a Holidays Act entitlement; “time off in lieu” is usually an agreed arrangement and should be documented clearly. This overview of time off in lieu can help you keep the terminology (and the entitlements) tidy.

What If A Public Holiday Falls During Annual Leave, Sick Leave Or Other Leave?

Public holidays can also affect leave in ways that catch employers (and employees) off guard.

• Annual leave: If a public holiday falls during a period of annual leave, the public holiday is treated as a public holiday (not an annual leave day). That means the employee isn’t debited annual leave for that day, and you generally pay them for the public holiday if it falls on an otherwise working day.
• Sick leave (and bereavement leave): If a public holiday falls during sick leave or bereavement leave, the day is treated as a public holiday (not sick/bereavement leave), provided it would otherwise be a working day for the employee.
• Unpaid leave: The interaction can be more fact-specific, particularly when assessing whether the day would otherwise have been a working day.

Because these scenarios often turn on the “otherwise working day” test and good records of rosters/patterns, it’s worth checking your leave and payroll settings if you’ve had inconsistent practices in the past.

Practical Public Holiday Pay Examples (So You Can Sense-Check Your Numbers)

A good public holiday pay calculator New Zealand process isn’t just about formulas - it’s also about sanity-checking. Here are some common small business examples.

Example 1: Part-Time Employee, Doesn’t Work The Public Holiday

• Employee usually works Mondays 9am–3pm (6 hours).
• Labour Day falls on Monday.
• Business is closed and employee doesn’t work.

Outcome: Because Monday is an otherwise working day, you pay the employee their RDP for 6 hours (what they would have earned).

Example 2: Shift Worker, Works On The Public Holiday

• Employee rostered to work 8 hours on the public holiday.
• They actually work the shift.

Outcome: You pay at least 1.5x for the 8 hours worked, and you provide an alternative holiday (because it’s an otherwise working day for them).

Example 3: Irregular Hours, ADP May Be Needed

• Employee’s hours vary every week (some weeks 2 shifts, some weeks 5 shifts).
• It’s hard to work out what they “would have worked” on the public holiday.

Outcome: You may need to use ADP. This is where careful record-keeping really matters, because you’ll want to be able to justify how you calculated the average.

Example 4: Commission Or Allowances

• Employee is paid a base rate plus regular weekly allowances.
• The public holiday is an otherwise working day and they don’t work.

Outcome: RDP may need to include allowances (and potentially commission) if they would have been paid had the employee worked that day. If the commission/allowance structure is messy, it’s easy to miscalculate - so it can be worth getting advice and tightening your employment documentation.

Common Public Holiday Pay Mistakes Small Businesses Should Avoid

Public holiday compliance issues are often accidental - and that’s exactly why they can be risky. If you’re underpaying, it can build up across multiple employees and multiple holidays per year.

Here are common traps we see:

• Forgetting the alternative holiday entitlement when an employee works on a public holiday that would otherwise have been a working day.
• Misunderstanding “otherwise working day” for casual, part-time, or variable-roster staff.
• Paying only the base rate at time and a half when allowances (or other regular pay components) would normally apply.
• Using ADP by default when RDP is actually easy to work out (or switching methods inconsistently across staff).
• Not keeping records of how you worked out the payment (which makes it harder to defend your payroll decisions later).
• Having vague employment terms about hours, rosters, and pay components - which makes every public holiday a bespoke debate.
• Missing public holiday interactions with annual leave or sick leave, which can lead to incorrect leave balances and pay.
• Not dealing with unused alternative holidays correctly on termination, which can create final pay issues.

As a general rule, if your payroll involves any complexity (shift work, allowances, commission, variable rosters), the best “calculator” is a combination of good records and well-drafted employment documents - not guesswork.

Key Takeaways

• The first step in any public holiday pay calculator New Zealand process is deciding whether the public holiday falls on an otherwise working day for the employee.
• If the employee doesn’t work a public holiday that is otherwise a working day, you generally pay Relevant Daily Pay (RDP) (or Average Daily Pay (ADP) if RDP isn’t possible or practical).
• If the employee works on a public holiday, they’re generally entitled to time and a half for the hours worked, and (if it’s otherwise a working day) an alternative holiday.
• When an alternative holiday is taken, it’s generally paid at RDP (or ADP) for the day the leave is taken.
• If a public holiday falls during annual leave, sick leave or bereavement leave, it’s generally treated as a public holiday (not a leave day), if it falls on an otherwise working day.
• On termination, unused alternative holidays need to be dealt with (including paid out) in line with the Holidays Act rules.
• Public holiday errors often come from irregular rosters, variable pay, or missing documentation - so strong contracts, clear policies, and consistent record-keeping make a big difference.
• If you’re unsure about a particular scenario (especially with variable hours, leave overlap, or commission structures), it’s worth getting tailored advice early to avoid underpayment risk.

If you’d like help reviewing your payroll approach, updating your employment documents, or making sure you’re meeting your obligations under the Holidays Act 2003, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.