What Happens To Unused Sick Leave In New Zealand?

If you employ staff in New Zealand, sick leave is one of those entitlements that’s simple in concept (people take time off when they’re unwell) but surprisingly easy to get wrong in practice.

A very common question we hear from small business owners is what happens to unused sick leave. Does it carry over forever? Do you have to pay it out when someone resigns? Can you “cash it out” if an employee never uses it?

Getting this right matters for two reasons. First, it’s a compliance issue (mainly under the Holidays Act 2003). Second, it’s a people-and-payroll issue-because misunderstandings about unused sick leave can quickly turn into disputes, especially when someone leaves or your business is going through change.

This article is general information only and isn’t legal advice. Because leave entitlements can be affected by an employee’s work pattern, their employment agreement, and how a business change is structured, it’s worth getting tailored advice for your situation.

Below, we break down how unused sick leave works in New Zealand, what your obligations are as an employer, and some practical tips to help you manage it confidently.

What Is Sick Leave In NZ (And How Does It Accrue)?

In New Zealand, sick leave is a minimum statutory entitlement under the Holidays Act 2003. The key points most employers need to keep front-of-mind are:

• Eligibility: An employee becomes entitled to sick leave after they’ve worked for you for 6 months (either 6 months continuous employment, or over 6 months they’ve worked an average of at least 10 hours per week and at least 1 hour per week or 40 hours per month).
• Minimum entitlement: Once eligible, they get 10 days’ sick leave per year (minimum), and then another 10 days on each subsequent 12-month anniversary (subject to the rules on carrying over and caps).
• It’s “days”, not hours: For most employees, sick leave is expressed in days. You still need to pay them correctly for the days taken based on what they would have worked on that day.
• It can be more generous: You can provide more than the minimum through the employment agreement or workplace policy.

From a small business perspective, the biggest “trap” is usually not the employee’s yearly entitlement-it’s understanding what happens to unused sick leave as time goes on.

Also worth noting: sick leave isn’t just for when the employee personally is sick or injured. It can be used when they need to care for a dependant (for example, a child or someone they look after) who is sick or injured.

If your contracts and policies need a tidy-up so the entitlement is clear and consistent across your team, it’s often worth starting with a properly drafted Employment Contract and then backing it up with a clear policy document.

What Happens To Unused Sick Leave While Someone Is Employed?

Unused sick leave doesn’t just disappear at the end of each year. In NZ, unused sick leave generally carries over-but not indefinitely.

Unused Sick Leave Can Carry Over (Up To A Cap)

Under the Holidays Act, an employee can carry over unused sick leave from year to year, but there’s a cap on how much they must be allowed to accumulate.

In most cases, the minimum cap is:

• Up to 20 days’ sick leave accrued at any one time (if the employee is on the minimum 10 days per year entitlement).

What that means in practice is:

• If an employee has, say, 6 unused sick leave days at their anniversary date, those days generally carry over and their new 10-day entitlement is added (subject to the cap).
• If they already have 20 days unused, then on their next entitlement date they don’t accrue additional days above the cap (unless your employment agreement provides more generous rules).

This “carry over but capped” approach is why unused sick leave is different from annual leave in the way it builds up.

Your Agreement Can Be More Generous (But Should Be Clear)

You can agree to provide:

• more than 10 days per year,
• a higher accumulation cap, or
• different “reset” rules (so long as you still meet the minimum statutory entitlements).

The key is making sure the agreement is written in a way your payroll provider, managers, and employees all understand the same way. If you’ve got a growing team, a Staff Handbook can help you apply consistent rules across the business-especially around evidence requirements, notification expectations, and leave approval workflows.

You Still Need Good Evidence Processes

Managing sick leave isn’t just about accrual. It’s also about what you can ask for when someone takes leave.

In general, you can request proof of illness/injury (such as a medical certificate):

• after 3 consecutive calendar days of sick leave; and/or
• earlier than 3 days, but if you do that, you usually need to cover the reasonable cost of getting the proof.

Because sick leave involves health information, it also intersects with privacy obligations. If you’re collecting or storing medical certificates or related details, it’s a good idea to ensure you handle that information appropriately and only collect what you need. Many businesses formalise their broader approach to personal information through a Privacy Policy (even if the day-to-day handling is managed internally).

Do You Have To Pay Out Unused Sick Leave When An Employee Leaves?

This is the main question behind unused sick leave, and the answer is usually welcome news for employers:

In New Zealand, unused sick leave is generally not paid out when employment ends.

That applies whether the employee:

• resigns,
• is dismissed,
• finishes a fixed term, or
• leaves due to redundancy.

So if an employee has 12 days of unused sick leave on termination, you generally do not include that as a payout in their final pay.

Why Unused Sick Leave Isn’t Paid Out

Sick leave is designed as a safety net to support employees when they can’t work due to illness or injury (or need to care for a dependant). It isn’t treated as “earned wages” in the same way annual holidays are.

That’s also why sick leave is not treated like annual leave, which is generally paid out on termination (as accrued annual holidays and/or holiday pay, depending on the circumstances).

When Could Unused Sick Leave Be Paid Out?

While the general rule is “no payout”, there are situations where a payout might happen, including:

• The employment agreement provides for it: Some employers offer a payout of unused sick leave as an incentive or retention tool. If you put this in writing, you must follow it.
• A settlement agreement: If an employment relationship issue is resolved via a settlement, parties might agree to payments that take into account various amounts (sometimes including leave-related considerations).

As a practical warning: if you don’t intend to pay out unused sick leave, don’t accidentally create that expectation through policy wording, offer letters, payroll communications, or a “we did it once for someone else” approach.

What About Redundancy?

Redundancy often brings final pay issues into sharp focus. Unused sick leave is still generally not paid out on redundancy. However, redundancy processes come with their own legal requirements around consultation and fair process.

If you’re navigating a restructure, it’s worth getting advice early-especially before you start issuing letters or having formal consultation meetings. This is where tailored Redundancy Advice can help you avoid missteps that turn a business decision into a personal grievance.

Can You Cash Out Sick Leave Or Convert It To Annual Leave?

Many small businesses ask if they can “cash up” unused sick leave, particularly when an employee rarely takes sick leave and you want to reward that reliability.

Unlike annual holidays (where employees can sometimes cash up a portion of annual leave if certain conditions are met), sick leave is different.

Cashing Out Sick Leave Isn’t A Standard Entitlement

There isn’t a general statutory process in the Holidays Act that says employees can cash out sick leave on request. If you choose to offer a cash-out arrangement, you should treat it as a contractual benefit and document it carefully.

Before you do this, think through:

• Will it create a health-and-safety risk by encouraging sick employees to come to work?
• Will it create inequity between employees (or between sites/teams)?
• How will you calculate the payout value (for example, based on what the employee would otherwise have been paid for a day of work)?
• Will it affect entitlements or the carry-over cap going forward?
• Are there tax and payroll implications for any payment you make (for example, how it’s treated and reported through payroll)?

If you do decide to offer it, be clear that it’s discretionary and set out the exact rules in writing (including eligibility, timing, and how it’s processed through payroll).

Converting Sick Leave To Annual Leave Generally Isn’t Automatic

Employees can’t simply “swap” unused sick leave into annual leave as a statutory right. If you agree to a conversion arrangement, that needs to be carefully documented.

Also be careful about record-keeping. Annual leave and sick leave have different legal treatment and different consequences on termination. Blurring the lines can create problems later-especially when you need to calculate final pay accurately.

If you want to offer incentives without muddying leave balances, you might instead use:

• a one-off bonus,
• an extra paid day off (separately documented), or
• a wellbeing benefit (for example, EAP contributions),

and keep statutory sick leave records clean and separate.

What About Unused Sick Leave When Your Business Changes (Sale, Restructure, Or Transfer)?

Unused sick leave questions often come up when your business is changing shape-especially when you’re buying/selling a business, changing entities, or restructuring teams.

If You’re Selling The Business

When you sell a business, employee entitlements and continuity of employment can be tricky, and the details depend on how the transaction is structured (for example, an asset sale vs share sale), what is agreed between the parties, and whether employees transfer to a new employer (and on what terms).

In many cases, sick leave doesn’t get “paid out” just because you’re selling-because unused sick leave generally isn’t paid out on termination. Instead, the key question is often whether the employee:

• remains employed by the same legal employer (for example, in a share sale), or
• ends employment with one entity and starts employment with a different legal employer (often in an asset sale, unless the parties and employee agree to recognise prior service and carry across entitlements).

These distinctions can affect how entitlements are treated, so it’s worth planning early and documenting the intended approach. If you’re preparing for a sale (or buying a business), it’s also important to consider what employees need to be told, and what rights they may have during the process. Situations like this are commonly discussed in Employee Rights in business sales contexts.

If You’re Restructuring Or Reducing Hours

Changes to work patterns can affect how a “day” of sick leave is paid and applied (because a “day” should reflect what the employee would have worked on that day).

If you’re changing rosters or reducing hours, it’s worth checking your approach is consistent and correctly documented, particularly if you have part-time staff with variable hours. Many employers start by reviewing their approach to Reducing Staff Hours and ensuring any changes are implemented through a proper employment law process.

How Should Small Businesses Manage Unused Sick Leave (Without Creating Headaches)?

Even if your legal obligations are clear, good sick leave management is where many businesses win or lose time (and goodwill). Here are practical steps you can implement without overcomplicating things.

1. Put The Rules In Writing

Your employment agreement and policies should clearly cover:

• when sick leave becomes available (after 6 months),
• how employees should notify you,
• when you may ask for medical proof,
• how you treat sick leave around public holidays/rosters, and
• how you record sick leave taken and balances.

Most disputes we see aren’t because an employer is trying to do the wrong thing-it’s because there was no clear document to point to when expectations didn’t match.

2. Train Your Managers (Consistency Matters)

If one manager approves sick leave without any questions, and another manager asks for proof every time, you can quickly end up with:

• claims of unfairness,
• privacy concerns, and
• arguments about what the “real” policy is.

A simple internal process (even a checklist) can go a long way.

3. Keep Clean Records

Accurate leave records are essential for compliance and for avoiding disputes when someone leaves. Make sure your payroll system correctly tracks:

• entitlement dates,
• days used,
• days carried over, and
• the applicable cap.

If you ever end up in a dispute about leave, strong records are usually your best friend.

4. Be Careful With “Special Deals”

It can be tempting to offer something like “we’ll pay out your unused sick leave if you resign nicely” or “we’ll convert your sick leave to annual leave this once”.

But informal promises can create ongoing expectations, and inconsistent benefits can create risk. If you want to offer a discretionary benefit, document it clearly and make sure it doesn’t accidentally change your baseline entitlements for everyone.

5. Don’t Forget The Human Side (Including Mental Health)

From a business owner’s perspective, it’s reasonable to want predictable staffing. At the same time, sick leave exists because people are human-and if you handle it well, you usually get better retention and fewer escalated issues.

Mental health related absences are increasingly common, and it helps to ensure your team understands that sick leave can apply in those situations too. Many employers also consider whether they need a broader wellbeing approach, especially if their workplace is high-pressure. If this is coming up in your business, Mental Health Day discussions are a good prompt to review your internal processes and documentation.

Key Takeaways

• Unused sick leave generally carries over from year to year, but employees usually can’t accumulate more than the statutory cap (commonly 20 days at any one time, unless you offer more generous terms).
• Unused sick leave is generally not paid out when an employee leaves your business, regardless of whether they resign, are dismissed, or are made redundant.
• You can offer more generous benefits (including different carry-over rules), but your employment agreement and policies should be clear to avoid disputes.
• Cashing out sick leave isn’t a standard legal entitlement like annual leave cash-ups, so if you want to offer it, document it carefully, consider health-and-safety risks, and check payroll/tax treatment.
• Business changes (sale, restructure, changing hours) can create tricky leave questions, so it’s worth getting advice early and keeping records clean.
• Strong documentation and consistent processes are the best way to manage sick leave confidently and protect your business from day one.

If you’d like help reviewing your employment documents, sick leave policy wording, or managing an employee exit or restructure, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.