Probation Periods In New Zealand: Employer Essentials

Hiring someone new is exciting - but it can also feel risky, especially when you’re a small business and every hire makes a real difference to your day-to-day operations.

That’s why probation periods in New Zealand are a common tool for employers. Done properly, a probation period gives you a structured way to assess whether a new employee is the right fit, while still meeting your legal obligations and treating the employee fairly.

In this guide, we’ll walk you through how probation periods in New Zealand work, how they’re different from trial periods, what you should put in writing, and what a fair process looks like if you decide the role isn’t working out.

Note: This article is general information only and isn’t legal advice. Because employment issues are fact-specific, you should get advice for your circumstances before taking action.

What Are Probation Periods In New Zealand?

A probation period is an initial period of employment where you assess whether the employee is suitable for the role. It’s often used to:

• confirm the employee has the skills they claimed to have
• check whether they’re a good cultural fit
• identify training or support needs early
• set clear performance expectations from day one

One of the biggest misunderstandings about probation periods in New Zealand is that they let you dismiss someone “more easily” or “without process”. That’s not how it works.

A probation period does not remove an employee’s rights. Even if someone is on probation, you still need to follow a fair process if you’re considering termination, and you still need to act in good faith (as required under the Employment Relations Act 2000).

Do Probation Periods Have To Be In Writing?

Practically, yes - you should treat this as non-negotiable.

If you want to rely on a probation period, you should make sure it’s clearly set out in the employee’s Employment Contract, agreed before they start (or at least before they begin work), and supported by a clear onboarding/performance plan.

If probation isn’t properly recorded, you can create confusion later about what was agreed, what standards applied, and whether the employee had a fair chance to meet expectations.

How Long Is A Typical Probation Period?

There’s no single “standard” length, but common probation periods are:

• 30 days (often for simpler roles or when you already have a lot of experience hiring for the position)
• 60 days (a middle-ground where some training time is needed)
• 90 days (commonly used where the role is more complex, client-facing, or requires measurable ramp-up)
• 3–6 months (sometimes used for senior roles, but only if you can justify why you need that long to assess suitability)

The key is that the period should be reasonable for the role. If the job involves complex systems, long lead times, or longer training, you may need a longer probation - but you should be able to explain why.

Probation Periods vs 90-Day Trial Periods: What’s The Difference?

Probation periods and trial periods are often confused - but they work differently and come with very different legal risks if you get them wrong.

Probation Period (Most Common)

A probation period is a performance assessment phase. The employee can still raise a personal grievance for unjustified dismissal if you terminate them without a fair reason and process.

In other words: probation is helpful, but it’s not a “shortcut” around proper employment processes.

Trial Period (More Technical)

A “trial period” (often referred to as a 90-day trial) is a specific legal mechanism. If it’s valid and properly implemented, it can restrict an employee’s ability to bring a personal grievance for unjustified dismissal.

However, trial periods are technical. For example, they generally need to be included in a written employment agreement that’s signed before the employee starts work, they can only apply to a genuinely “new” employee (not someone you’ve employed before), and they can’t be longer than 90 days.

It’s also important to understand the limits of what a trial period does (and doesn’t) cover. Even with a valid trial period, an employee may still be able to raise other types of claims (for example, disputes about pay/entitlements, discrimination, harassment, or other alleged breaches), and employers still have ongoing obligations around good faith and lawful decision-making.

Which Option Should You Use?

For many small businesses, a well-run probation period is the more straightforward and lower-risk option - as long as you manage it properly.

If you’re considering a trial period, it’s worth getting advice first so you don’t accidentally rely on a clause that doesn’t actually protect you (or overlook claims that can still be brought).

How To Set Up A Probation Period (The Paperwork)

If you want the probation period to actually help your business, it needs to be more than just a sentence in a contract.

Here are the foundations we recommend putting in place before your new hire starts.

1. Put The Probation Clause In The Employment Agreement

Your employment agreement should clearly cover:

• the probation length (e.g. 60 or 90 days)
• what “success” looks like (for example, required competencies, targets, quality standards, behavioural expectations)
• how performance will be reviewed (e.g. weekly check-ins, a mid-probation review, and an end-of-probation review)
• support and training you’ll provide (where relevant)
• notice periods that apply during probation (don’t assume it’s “instant”)

A generic clause can easily cause problems later if it doesn’t match how your business actually runs or what the role requires. Getting the contract right from day one is one of the simplest ways to reduce risk.

2. Set Expectations Early (And In Plain English)

Many probation issues happen because expectations were implied rather than explained.

At the start of employment, set out:

• position description and key responsibilities
• work hours, break expectations, and rostering processes
• how performance will be measured
• behavioural expectations (attendance, communication, teamwork, client handling)
• policies the employee must follow (health and safety, device use, confidentiality)

This doesn’t need to be overwhelming - it just needs to be clear and consistent.

3. Remember Your Wider Legal Duties Don’t Pause During Probation

Even during probation, you still need to meet your general obligations as an employer. For example:

• Good faith obligations under the Employment Relations Act 2000
• Holiday and leave entitlements under the Holidays Act 2003 (even if the employee hasn’t been around long)
• Health and safety obligations under the Health and Safety at Work Act 2015 - your duty of care applies from day one
• Anti-discrimination obligations under the Human Rights Act 1993
• Privacy obligations under the Privacy Act 2020 if you’re collecting employee information

The takeaway: probation is not a “free pass” - it’s a structured way to manage onboarding and performance fairly.

Managing Probation: How To Get The Benefits Without The Legal Headaches

If you want probation periods in New Zealand to work in practice, the biggest thing to focus on is documentation and communication.

You don’t need to run a corporate HR department - but you do need a process that’s fair, consistent, and easy to explain if you’re ever challenged on it.

Build A Simple Probation Review Process

A strong (and realistic) structure might look like this:

• Week 1 check-in: confirm training is in place, clarify any early confusion, set priorities
• Weekly or fortnightly check-ins: short meeting, quick notes, clear action points
• Mid-probation review: what’s going well, what needs improvement, what support will be provided
• Final review: confirm ongoing employment, extend probation only if lawful/appropriate (and ideally by agreement), or start a fair process if termination is being considered

From a practical perspective, these meetings are also your “early warning system”. If you’re unhappy with performance, it’s far better to raise it early and clearly than to wait until the last week of probation.

Give Real Feedback (Not Hints)

One of the most common mistakes employers make during probation is giving vague feedback like:

• “Just be more proactive.”
• “We need you to pick things up faster.”
• “You’re not quite where we need you to be.”

If performance isn’t meeting expectations, you’re usually better to be specific and give examples, such as:

• the task or standard that wasn’t met
• what “good” looks like (a benchmark or example)
• what you expect next time
• what support/training you’re providing
• when you’ll review progress again

This aligns with a fair approach and puts the employee in a genuine position to improve.

Use Probation To Confirm “Fit” - But Be Careful With Subjective Reasons

Sometimes the issue during probation isn’t skills - it’s fit (communication style, attitude, reliability, teamwork).

You can manage “fit” concerns during probation, but you still need to keep things objective and professional. Avoid drifting into reasons that could look discriminatory or unrelated to work.

Also be mindful of what was asked (or not asked) during hiring - if you want to strengthen your recruitment process, it’s worth understanding illegal interview questions so you don’t accidentally create risk before the employee even starts.

What If It’s Not Working Out? Terminating During Or After Probation

This is the part many employers worry about - and it’s where process matters most.

If you’re considering termination during probation, your safest approach is to treat it like any other performance-related termination: act in good faith, be clear about the issues, give the employee a real chance to respond, and consider alternatives.

Probation does not remove the need for a fair process.

Follow A Fair Performance Management Process

While every situation is different, many employers use a structured approach similar to a Performance Management Process, scaled to the circumstances and the role.

That usually involves:

• identifying the concerns clearly (with examples)
• meeting with the employee and letting them respond
• setting expectations for improvement and a timeframe
• providing reasonable support (training, supervision, clearer instructions)
• reviewing progress and documenting outcomes
• warning where appropriate (so termination is not a surprise)

In some cases, a faster process may be justified (for example, where the employee is clearly unable to perform core duties even after support). But skipping steps entirely is where employers often get into trouble.

Be Careful With “Instant Dismissal” Assumptions

Even if the employee is in a probation period, termination still needs to comply with:

• the employment agreement (including notice periods)
• good faith obligations
• procedural fairness

If you’re unsure what a compliant termination process looks like in your situation, it’s worth getting advice early - not after the relationship has already escalated. The practical steps (and common pitfalls) are also discussed in How To Terminate An Employee.

Use The Right Documents (And Keep A Paper Trail)

If termination becomes likely, make sure you’re documenting key steps, such as meeting notes, warning letters (where relevant), and a termination letter that matches your agreement and the process followed.

Many small businesses find it easier (and safer) to use a consistent set of documents, like an Employee Termination Documents Suite, especially if you don’t have in-house HR.

What About Misconduct During Probation?

Misconduct (for example, dishonesty, serious safety breaches, harassment, theft, or refusing reasonable instructions) should be treated seriously whether or not the employee is on probation.

However, even for misconduct, you generally still need a fair process (investigate, present allegations, allow a response, consider the response genuinely, and then decide on an outcome that’s proportionate).

If the misconduct involves health and safety, remember your obligations under the Health and Safety at Work Act 2015 - you may need to act quickly to keep people safe, but you should still follow a defensible process.

Can You Extend A Probation Period?

Sometimes you’ll reach the end of probation and think: “They’re close, but not quite there.”

Extending probation can be risky if it’s not handled properly. If you want to extend, you should consider:

• Does the employment agreement allow for an extension, and under what conditions?
• Is the extension reasonable (and not open-ended)?
• Have you clearly explained what needs to improve and by when?
• Has the employee agreed (preferably in writing)?

If you’re in this position, it’s worth getting advice specific to your circumstances, because a poorly handled extension can create confusion and increase legal risk.

Key Takeaways

• Probation periods in New Zealand help you assess suitability, but they don’t remove an employee’s legal rights or your obligations to act fairly and in good faith.
• Probation is different from a trial period; trial periods are more technical and need to meet specific legal requirements to be effective.
• Put probation terms in writing (ideally inside a tailored employment agreement) and make sure expectations and review steps are clear from day one.
• Manage probation actively with regular check-ins, documented feedback, and genuine opportunities for the employee to improve.
• If you’re considering termination during probation, follow a fair process and comply with notice requirements and good faith obligations.
• Keep documentation consistent - strong records and the right letters can reduce misunderstandings and help you defend your decisions if challenged.

If you’d like help putting the right probation clause in place, updating your employment agreements, or managing a tricky probation outcome, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.