How To Calculate Annual Leave And Holiday Pay In NZ (Holidays Act 2003)

If you employ staff (even just one person), you’ve probably realised that leave can be one of the easiest things to get wrong - and one of the fastest ways to end up in a messy payroll dispute.

In New Zealand, annual leave and holiday pay are mainly governed by the Holidays Act 2003. The tricky part is that the Act doesn’t just say “pay them their usual rate” and call it a day. It sets out specific calculation rules that can change depending on things like variable hours, changes to pay, allowances, and commission.

This guide is written from an employer perspective and explains annual leave entitlements, plus the main methods used to calculate annual leave pay and other holiday pay amounts in a way that helps you stay compliant - and keeps your team paid correctly. (Because the Holidays Act rules are technical and payroll-system dependent, it’s also sensible to confirm your approach with your payroll provider or accountant if you have variable pay structures.)

What Are Annual Leave Entitlements In New Zealand?

Before you can calculate annual leave pay, you need to be clear on the entitlement itself.

Minimum Annual Leave Entitlement

Under the Holidays Act 2003, most employees become entitled to:

• At least 4 weeks’ paid annual leave after they complete 12 months of continuous employment.

This is the legal minimum. You can offer more generous annual leave entitlements in an employment agreement, but you can’t offer less.

It’s a good idea to make sure your Employment Contract clearly sets out:

• when annual leave becomes available (e.g. after 12 months, or if you allow it in advance)
• how leave is requested and approved
• whether the business has any closedown periods
• whether employees can cash up annual leave (and on what terms)

Does “4 Weeks” Mean 20 Days?

Not always. “4 weeks” is based on the employee’s normal working week (and it’s possible for the “week” entitlement to stay as weeks even if the number of working days in a week changes over time).

For example:

• If an employee works 5 days per week, 4 weeks usually equals 20 days.
• If an employee works 3 days per week, 4 weeks usually equals 12 days.
• If an employee works irregular shifts, it may need to be based on their typical rostered week (and how “a week” is defined for that employee).

This is why payroll systems often track annual leave in weeks rather than just days - it helps maintain accuracy when an employee’s work pattern changes.

What About Employees Before 12 Months?

Before an employee reaches 12 months, they don’t yet have an annual leave entitlement that they can require you to provide. However, you can:

• allow them to take annual leave in advance (by agreement), or
• pay them holiday pay on termination (often calculated at 8% of gross earnings for the relevant period - more on this below).

As an employer, having a clear process for leave in advance can help avoid confusion (and avoid a situation where someone takes more leave than they later become entitled to, and you then have to work out how to treat the over-taken leave under the Act and your employment agreement).

What Counts As “Holiday Pay” Under The Holidays Act?

In everyday conversation, people often say “holiday pay” to mean annual leave pay. Under the Holidays Act framework, holiday pay can refer to a few different payment types, including:

• Annual leave pay (paid when annual leave is taken)
• Public holiday pay (paid when an employee doesn’t work on a public holiday that would otherwise be a working day, or paid at higher rates if they do work)
• Sick leave and bereavement leave pay (paid using the relevant daily pay / average daily pay rules)
• Holiday pay on termination (this can include payment for unused annual leave entitlements, and a separate 8% calculation for the part-year since the last anniversary date, depending on what leave has already been taken/paid)

This article focuses mainly on annual leave calculations, because that’s where many payroll errors happen - especially for small businesses with variable hours, overtime, or commission structures.

How To Calculate Annual Leave Pay (The “Greater Of” Rule)

When an employee takes annual leave, you generally must pay them at the greater of:

• Ordinary Weekly Pay (OWP), or
• Average Weekly Earnings (AWE).

This “greater of” rule is a core concept under the Holidays Act 2003. It’s designed to ensure employees don’t get underpaid for annual leave if their hours or earnings fluctuate.

Let’s break each calculation down in plain English.

Ordinary Weekly Pay (OWP)

OWP is intended to reflect what the employee would have earned in a “normal” week if they were at work.

In many cases, you can work out OWP by looking at the employee’s:

• normal working hours
• normal days
• base salary/wages
• regular allowances (where they are a normal part of the employee’s pay)

OWP can become complicated where the employee’s pay varies, for example if:

• their roster changes regularly
• they receive commission or incentives
• they regularly do overtime or extra shifts
• they receive variable allowances (e.g. on-call allowances)

If it’s not possible or not practicable to determine OWP, the Act allows you to use a method that fairly reflects the employee’s ordinary weekly pay (often by using an averaging approach based on recent earnings). This is one reason employers often get legal and payroll advice together - the legal rule and the payroll method have to match, and the “right” method can depend on how your pay items are configured and what data you hold.

Average Weekly Earnings (AWE)

AWE is usually calculated by taking the employee’s gross earnings over the 12 months immediately before the end of the last pay period before the annual leave, and dividing by 52.

As an employer, this can be a safer number to rely on for employees with variable earnings, because it “smooths out” peaks and troughs over time.

In practice, for many employees you’ll calculate both OWP and AWE, then pay the employee the higher amount for the annual leave week.

A Simple Example (OWP vs AWE)

Imagine one of your employees:

• usually earns $900 per week (base hours), but
• has had a busy year with extra shifts and incentives, bringing their 12-month average to $980 per week.

If they take one week of annual leave, you’d typically pay them $980 (because AWE is greater than OWP).

This is exactly why the “greater of” rule matters - it helps reduce the risk of underpaying annual leave when earnings aren’t steady.

What Earnings Should You Include When Calculating Leave Pay?

A common employer mistake is assuming annual leave is only paid on base wages or salary.

Under the Holidays Act, the calculations rely on gross earnings, which is a defined concept and can be broader than base pay. Depending on the payment type and how it is earned, gross earnings can include things like:

• salary or wages
• some overtime and additional hours payments
• commission
• productivity or incentive-based payments
• some allowances

Some payments are generally excluded (for example, genuine reimbursements for expenses).

But classifications matter: if something is really part of remuneration, treating it as a “reimbursement” (or otherwise excluding it from gross earnings) can create underpayment risk. If you have complex allowances, commissions, or bonuses, it’s worth getting payroll/accounting advice on how those items should be treated under the Holidays Act definitions.

Why This Matters For Small Businesses

If you run a small business, it’s common to have staff who:

• pick up extra shifts when it’s busy
• earn commission (sales, recruitment, service-based roles)
• receive allowances (e.g. tools, uniform, travel)

If those amounts aren’t handled correctly in your leave calculations, the underpayment can compound over time - and then become a bigger problem when someone resigns and you have to pay out entitlements.

This is also why it’s worth documenting pay structures carefully in your employment paperwork and workplace policies. Many businesses package this neatly into an overall Workplace Policy and contract suite so expectations (and calculation inputs) are consistent.

What If An Employee Has Variable Hours, Casual Work, Or Changing Pay?

Annual leave entitlements can feel straightforward for a full-time, Monday-to-Friday employee on a fixed salary. The complexity usually kicks in when work patterns change - which is very common for SMEs.

Variable Hours And Rosters

If an employee’s hours vary week to week, it can be harder to identify what their “ordinary” week looks like (for OWP). In these cases, AWE (and the Act’s approach where OWP isn’t practicable) often becomes important to ensure the employee isn’t disadvantaged.

As an employer, it’s worth asking:

• Do we have a stable record of the employee’s actual earnings and hours?
• Are allowances and incentives coded correctly in payroll?
• Is the leave calculation method consistent across the business?

If your team’s hours are regularly changing, you may also be thinking about operational changes like reducing staff hours. Just be aware that changes to hours and patterns can flow through into leave calculations, so it’s worth considering both employment law and payroll impacts at the same time.

Casual Employees

“Casual” work arrangements can be especially tricky. In New Zealand, calling someone “casual” in the contract doesn’t necessarily determine their legal position - what matters is the real pattern of work and whether the arrangement is, in substance, ongoing employment.

From a compliance perspective, you should be confident that:

• your casual arrangements are genuinely intermittent and meet the reality of how work is offered and accepted, and
• leave entitlements and holiday pay have been handled correctly throughout the relationship (including at termination).

If you’re employing casual staff, it’s worth ensuring your approach aligns with casual workers’ leave entitlements, because this is a common area where businesses unintentionally fall out of step with the Holidays Act.

Pay Rises And Role Changes

If an employee gets a pay rise, changes role, or moves from part-time to full-time, their annual leave pay rate may change too.

Annual leave is generally intended to be paid at the higher of OWP or AWE at the time the leave is taken - not necessarily the rate that applied when the leave was accrued. This is why employers sometimes see annual leave liabilities increase after pay rises.

That said, the details matter, and it’s important your calculations are consistent and defensible (especially if you’re ever audited or challenged).

Paying Out Annual Leave When Employment Ends (And Common Traps)

Termination is where many annual leave issues surface, because you have to “square up” everything owing.

At a high level, when employment ends you may need to pay out:

• unused annual leave that the employee is entitled to (for completed 12-month periods), generally paid as if the leave were taken immediately before the end of employment (which commonly involves the same “greater of” approach), and
• holiday pay for the current leave year (often calculated as 8% of gross earnings since the employee’s last anniversary date), with adjustments depending on whether any leave has been taken in advance or paid out already.

This is also where employers can run into issues if there’s a dispute about notice, final pay timing, or whether deductions are permitted.

If you’re managing an exit, it’s worth being careful with your end-of-employment process, including how you handle payment in lieu of notice and what gets included in final pay.

Can You Force An Employee To Take Annual Leave?

Sometimes the question isn’t “how do we calculate annual leave?” but “how do we manage it?”

Employers often consider directing staff to take leave when:

• there’s a quiet period
• the business is closing over Christmas/New Year
• employees have built up large leave balances

The Holidays Act has rules about when you can require annual leave to be taken (including notice requirements, and special rules around closedown periods). If you’re looking at this, it’s important to get it right - particularly if it’s a sensitive situation or if you’re applying it across your workforce.

For practical guidance on the risks and process, many employers start by checking how forced annual leave works in New Zealand.

Record-Keeping: Your Best Defence

If your annual leave calculations are ever questioned, your records matter.

Good record-keeping should include:

• hours worked (especially for variable-hour staff)
• gross earnings breakdowns (including commission/allowances)
• leave taken (dates, type of leave, number of weeks/days)
• leave balances and entitlement dates
• how you calculated leave pay (OWP vs AWE, and what you did where OWP wasn’t practicable)

Even with the best intentions, payroll errors happen. The businesses that handle them best are the ones that can quickly identify the issue, quantify it, and correct it transparently.

Key Takeaways

• Annual leave entitlements in New Zealand are generally at least 4 weeks’ paid annual leave after an employee completes 12 months of continuous employment.
• “4 weeks” is based on the employee’s normal working week, so it won’t always equal 20 days (especially for part-time or irregular work patterns).
• When an employee takes annual leave, you usually need to pay the greater of Ordinary Weekly Pay (OWP) or Average Weekly Earnings (AWE).
• Leave calculations often require you to consider what’s included in gross earnings - not just base wages (commission, overtime, and allowances may affect the result depending on how they’re paid and classified).
• Variable hours, intermittent/casual arrangements, and changing pay rates can make annual leave compliance more complex, so it’s worth checking your payroll setup and employment documentation early.
• Employment endings are a common flashpoint: paying out untaken leave entitlements and part-year holiday pay correctly can help prevent disputes and underpayment claims.

If you’d like help setting up your employment documents or sense-checking your approach to annual leave calculations, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.