If you employ staff in New Zealand, sick leave is one of those “simple” topics that can quickly turn messy in practice.
A common question we hear from small business owners is: does sick leave carry over from year to year? And if it does, how much can build up, what happens if your employee doesn’t use it, and what do you need to show on payslips and records?
This guide breaks down the key rules under New Zealand employment law, plus the practical steps you can take to stay compliant and avoid avoidable disputes.
Does Sick Leave Carry Over In New Zealand?
Yes - in most cases, sick leave does carry over in New Zealand.
Under the Holidays Act 2003, eligible employees receive a minimum sick leave entitlement each year, and any unused sick leave generally carries forward into the next year.
That said, it’s not an unlimited “bank”. There’s a cap on how much sick leave can be carried over (more on that below), and there are also eligibility rules that affect when sick leave starts and how it accrues.
From an employer perspective, the big takeaway is:
- you need to track sick leave balances accurately;
- you need to apply the statutory rules (and your own employment agreement terms) consistently;
- you should make sure your Employment Contract clearly explains entitlement, notice, and evidence requirements.
How Much Sick Leave Do Employees Get (And When Does It Start)?
Before you can work out carry over, you need to be clear on when an employee becomes entitled to sick leave in the first place.
Minimum Sick Leave Entitlement
In New Zealand, employees are generally entitled to a minimum of 10 days’ paid sick leave per year once they meet the eligibility requirements under the Holidays Act 2003.
In practical terms, sick leave:
- becomes available after 6 months of employment if the employee has worked for the employer for an average of at least 10 hours per week and at least 1 hour in every week, or 40 hours in every month;
- is then provided again after each subsequent 12-month period of meeting those requirements (this is usually based on each employee’s entitlement year, often linked to their start date); and
- can be used when the employee is sick or injured, or when their spouse or partner, or a person who depends on them for care, is sick or injured.
Because eligibility can differ depending on working patterns (for example, casual or irregular hours), it’s important your records show:
- start date;
- hours and days worked;
- the date sick leave entitlement becomes available; and
- any sick leave taken and remaining balances.
If you have a mix of full-time, part-time, and casual staff, it’s worth reviewing your setup (including your agreements) so you’re applying entitlements correctly across the board. If you’re unsure whether someone is genuinely a “casual” worker (or should be treated as permanent part-time/full-time), it’s usually best to get advice early rather than untangling it later.
What Are The Sick Leave Carry Over Rules (Including The Cap)?
This is where most of the confusion comes from.
In New Zealand, unused sick leave generally carries over into the next entitlement year, but only up to a maximum limit.
What Is The Maximum Sick Leave That Can Accumulate?
Employees can build up sick leave over time, but the Holidays Act 2003 sets a cap on how much can be carried forward and held at any one time.
Practically, the cap works like this:
- If an employee doesn’t use all their sick leave in an entitlement year, the leftover balance can carry into the next year.
- But once they hit the maximum accumulation limit, extra unused sick leave generally won’t keep stacking up beyond that point.
For most employees, the maximum sick leave balance that can be accrued is 20 days (unless the employment agreement provides a higher entitlement).
Tip for employers: the cap is a legal minimum position. You can always be more generous (for example, allow a higher cap or no cap), but if you do that, make sure it’s written clearly in the employment agreement and applied consistently. Being “informally generous” without documenting the rule can create expectations you may be stuck with later.
Does Sick Leave Expire?
Under the minimum legal framework, sick leave doesn’t usually “expire” each year the way some people assume. The relevant concept is the maximum accrual cap, not an expiry date.
If you want to introduce rules that are different from the statutory minimum (for example, a policy that sick leave above a certain amount won’t carry over, or will be cashed out), you should get tailored advice first - because sick leave is an entitlement area where getting it wrong can expose you to wage and leave claims.
What If You Offer More Than The Minimum Sick Leave?
Many small businesses choose to offer more than the statutory minimum sick leave as part of their benefits package - especially if you’re competing for talent, you want to reduce the risk of sick employees coming to work, or your business has higher health and safety risks.
If you offer extra sick leave (for example, extra days per year or a higher carry-over cap), you should treat it like any other employment benefit:
- spell it out clearly in the employment agreement and/or policies;
- be explicit about whether the extra portion carries over and whether there’s a cap;
- clarify whether the extra portion is discretionary or contractual; and
- ensure payroll and managers apply it consistently.
Consistency matters. If one manager tells Team A that “unused sick leave rolls over forever” but another manager applies a cap, you’re setting yourself up for disputes and loss of trust.
This is also a good time to check your wider employment documentation is fit for purpose, including your core Workplace Policy framework (for example, leave requests, evidence rules, privacy, and medical information handling).
Common Employer Questions About Sick Leave Carry Over
Even when you know the “headline” rule (yes, sick leave carries over, but there’s a cap), employers usually run into the tricky practical questions below.
Can You Ask For A Medical Certificate?
Yes, employers can ask for evidence in certain situations, but you should follow the rules carefully and apply them consistently.
Under the Holidays Act 2003, you can generally require proof of sickness or injury if an employee has been sick for 3 or more consecutive calendar days (including weekends and public holidays). You can also ask for proof within the first 3 days, but if you do, you must generally pay the employee’s reasonable costs of getting that proof.
From a risk-management perspective, your best move is to:
- set out your evidence requirements in writing (employment agreement and/or policies);
- train your managers not to “freestyle” these decisions;
- handle medical information carefully (it’s sensitive personal information).
Because medical information is sensitive, make sure you’re also thinking about your privacy obligations when storing or sharing it internally.
Can You Require An Employee To Use Sick Leave (Or Save It)?
Sick leave is there to support employees when they are unwell (or in other permitted situations). As an employer, you generally shouldn’t be directing staff to use sick leave when they aren’t sick.
Equally, you shouldn’t pressure people to “save” sick leave for later. If they’re unwell and entitled to take it, they should be able to use it.
Where things get tricky is when an employee is away for another reason (for example, stress, burnout, or mental health reasons). These situations can still fall within sick leave in many cases, but the facts matter - and so does how you handle the conversation.
If you’re trying to manage attendance or performance issues, it’s important to do that through a fair process, rather than by trying to restrict lawful leave. (If you need help setting up an appropriate performance or absence management pathway, it’s worth getting advice early.)
What Happens To Sick Leave When An Employee Resigns?
This is a big one for payroll.
In New Zealand, unused sick leave is generally not paid out when an employee leaves employment (unlike annual holidays in many situations). So if an employee resigns with a remaining sick leave balance, that balance typically ends when employment ends.
However, always check:
- the employment agreement (some employers offer more generous benefits);
- any applicable policies;
- whether you have accidentally created a custom through consistent past practice; and
- what other final payments are owing (for example, annual holidays, alternative holidays, and notice).
If you’re paying out notice instead of having the employee work their notice period, you’ll also want to get the termination paperwork right. This is a common area where mistakes happen, especially for small businesses moving quickly. Having clear advice around payment in lieu of notice can help you avoid disputes over final pay.
What If The Employee Has A Long Period Of Sick Leave?
If an employee uses all of their sick leave and is still unwell, you may be looking at a more complex situation, such as:
- unpaid leave (by agreement);
- use of annual holidays (by agreement, not automatically);
- an extended absence management process; or
- in some cases, a medical incapacity process (which needs to be handled carefully and fairly).
These scenarios are rarely “one size fits all”. If you’re facing extended absences, it’s worth getting tailored legal advice early - not only to make sure you’re compliant, but also to help you manage the situation in a way that’s fair and commercially realistic.
How Should Employers Track Sick Leave Carry Over And Stay Compliant?
Most sick leave issues don’t come from bad intentions - they come from poor systems.
Here are practical steps you can put in place so sick leave carry over doesn’t become a headache.
1) Use Clear, Written Employment Agreements
Your employment agreement should clearly address:
- when sick leave becomes available;
- how sick leave is requested and recorded;
- when evidence can be required;
- how sick leave interacts with other types of leave (where relevant); and
- any “above-minimum” benefits you offer (and whether they carry over).
If your agreement is silent or vague, managers tend to make inconsistent calls - and that’s where disputes start. Having a properly drafted Employment Contract (tailored to whether the role is full-time or part-time) is one of the easiest ways to reduce risk from day one.
2) Align Your Payroll System With Entitlement Years
Sick leave is typically calculated and refreshed based on each employee’s entitlement year (often tied to their start date), not just a January–December calendar year.
Make sure your payroll software (and whoever processes payroll) can correctly:
- apply eligibility thresholds;
- refresh the annual entitlement on the correct date;
- carry over unused sick leave; and
- apply the maximum accrual cap.
If you’ve ever acquired a business, merged teams, or migrated payroll systems, it’s worth checking the balances were transferred correctly - because errors can compound over time.
3) Have A Simple Internal Process For Leave Requests
Especially in small businesses, leave requests can be informal (“I’m not coming in today, I’m sick”). That’s normal - but you still need a process behind the scenes.
Your process should cover:
- who the employee notifies;
- by what time (where practical);
- how the absence is recorded;
- when evidence may be requested; and
- how privacy is protected (for example, avoiding unnecessary disclosure of medical details).
If you want to formalise this across the business, a properly drafted policy suite can help keep things consistent (and easier to manage as you grow).
4) Train Managers To Handle Sick Leave Fairly
One of the fastest ways to trigger an employment relationship issue is inconsistent treatment.
Train managers to:
- avoid “diagnosing” employees or asking for unnecessary medical detail;
- avoid suggesting sick leave is “optional” if someone is unwell;
- follow your evidence rules consistently; and
- escalate tricky situations (for example, repeated Monday/Friday absences) rather than making on-the-spot threats or accusations.
Handled well, these situations can be managed professionally without damaging morale.
5) Keep Proper Records
Accurate leave records are essential for compliance and for resolving disagreements quickly.
If an employee later claims they were underpaid or that their leave balance was wrong, your records will matter. Good recordkeeping also makes it much easier to answer questions like “how much sick leave carried over did they have at the start of last year?” without needing to reconstruct everything manually.
Key Takeaways
- In New Zealand, sick leave generally carries over - unused sick leave can usually be carried forward into future years.
- Sick leave carry over is not unlimited: there is generally a maximum accrual cap and, for most employees, the maximum balance is 20 days unless you provide more in the employment agreement.
- Employees are generally entitled to 10 days’ paid sick leave after they meet the eligibility requirements (commonly after 6 months where the minimum hours/work pattern threshold is met), so it’s important your payroll and records correctly track entitlement start dates and balances.
- If you offer sick leave above the statutory minimum, make sure the extra entitlement (including carry over rules) is clearly written into the employment agreement and applied consistently.
- Unused sick leave is generally not paid out on termination, but you should still check the employment agreement and ensure final pay is calculated correctly.
- Clear systems (agreements, policies, payroll configuration, manager training, and recordkeeping) are the best way to prevent sick leave disputes and stay compliant.
If you’d like help reviewing your sick leave clauses, updating your Employment Contract, or putting in place a clear leave policy, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.
