Probationary Periods in NZ Employment: Contracts and Process

Hiring a new team member is a big step for any small business.

Even when you’ve done the interviews, checked references, and found someone who looks perfect on paper, you don’t really know how the working relationship will play out until they’re actually in the role.

That’s where probationary periods come in. Used properly, probationary periods can give you a structured, fair way to assess performance and fit early on - while still meeting your legal obligations as an employer in New Zealand.

In this guide, we’ll break down what probationary periods are, how they work (and how they don’t), what to put in your employment agreement, and the common mistakes that can trip up employers.

What Is A Probationary Period (And What Is It Not)?

A probationary period is an initial period at the start of employment where you and the employee can assess whether the role is the right fit.

In practice, you’ll usually use this time to:

• set expectations and confirm role responsibilities
• train and onboard the employee properly
• monitor performance and behaviour in real working conditions
• provide feedback early (before issues become entrenched)
• decide whether ongoing employment is appropriate

But here’s the key point: a probationary period does not remove an employee’s rights.

Even if someone is “on probation”, they are still an employee with the usual protections under New Zealand employment law, including (among other things) the right to be treated in good faith and the right to a fair process if you’re considering dismissal.

If you’re thinking “probation” means you can end employment instantly, without reason, or without procedure - that’s where employers commonly get into trouble.

Probationary Periods vs 90-Day Trial Periods

Employers often mix up probationary periods with 90-day trial periods. They’re not the same thing.

• Probationary period: The employee can generally raise a personal grievance (including for unjustified dismissal), so you still need substantive justification and a fair process.
• Trial period: If a valid 90-day trial period applies, the employee may be prevented from bringing a personal grievance for unjustified dismissal - but only if strict legal requirements are met (including who can use trial periods, and exactly how the clause is agreed and applied). Trial periods are technical and must be implemented correctly to be effective.

If you’re not 100% sure which one you’re using (or which one you should be using), it’s worth getting advice before you put anything in writing. The wording and setup matter a lot.

Do Probationary Periods Need To Be In Writing?

Not strictly. However, as a practical and risk-management matter, probationary periods should be clearly set out in the written employment agreement.

In New Zealand, employees must have a written employment agreement. If you want the relationship to start with a probationary period, it should be properly drafted into that agreement and agreed before the employee starts work.

In other words: don’t wait until week one to send a “probation letter”, and don’t rely on a casual verbal “we’ll see how you go for the first three months”. That’s not the kind of legal foundation you want to build your team on.

For many small businesses, the most efficient approach is to have an employment agreement that’s tailored to your role and your business (including any probation clauses), rather than trying to patchwork terms together later. A properly drafted employment contract is usually the best place to start.

What Should A Probation Clause Include?

There’s no one-size-fits-all clause, but a well-drafted probationary period clause usually covers:

• Length of probation: Commonly 30, 60, or 90 days, but it can be longer depending on the role (it just needs to be reasonable).
• How performance will be assessed: For example, KPIs, standards, behaviours, attendance, quality of work, or customer service benchmarks.
• Support and training: What onboarding, supervision, or coaching you’ll provide.
• Review points: For example, a 2-week check-in, a 6-week review, and a final probation review meeting.
• What happens at the end of probation: Confirmation of ongoing employment, extension (if genuinely required and agreed), or a formal performance process if issues remain.

The clause should also work alongside other important terms, like notice periods, performance management procedures, and disciplinary provisions (if relevant).

How Long Can A Probationary Period Be In NZ?

There isn’t a single “standard” probationary period length under New Zealand law. Instead, what matters is whether the probationary period is reasonable for the role and your business circumstances.

As a rough guide:

• 30 days can make sense for simple roles where performance can be assessed quickly.
• 60–90 days is common for many small business roles, especially where training and workflow ramp-up takes time.
• 3–6 months can sometimes be reasonable for senior, technical, or relationship-based roles (where outcomes take longer to measure), but you should be careful and make sure the probation is not being used as an indefinite “try before you buy”.

If you do want a longer probationary period, it becomes even more important to clearly document:

• what success looks like in the role
• what support you’ll provide
• when performance will be reviewed

And if you’re considering a role that’s only intended to last for a defined period (rather than ongoing employment), a probationary period might not be the right tool at all. In that case, you may be looking at a fixed-term arrangement - but fixed-term employment has its own rules and needs a genuine reason. (This is where many employers benefit from understanding the legal requirements around fixed term contracts before making offers.)

What Are Your Legal Obligations During A Probationary Period?

A probationary period doesn’t reduce your obligations as an employer. If anything, it’s a time when you should be extra intentional about documenting expectations, providing feedback, and acting fairly.

Some key legal principles to keep front of mind include:

1) Good Faith Applies From Day One

Employment relationships in New Zealand are governed by good faith obligations (under the Employment Relations Act 2000). That means you must be communicative and not mislead or deceive the employee, and you should be open and honest about performance concerns.

Practically, good faith during probation often looks like:

• making sure the employee understands their role and priorities
• raising concerns early (not saving them up for the end-of-probation surprise)
• giving the employee a reasonable chance to improve
• considering the employee’s explanation and any relevant context

2) You Still Need A Fair Process If Things Aren’t Working

This is one of the biggest misconceptions about probationary periods.

If you decide you may need to end employment during (or at the end of) probation, you generally still need to follow a fair process. That often includes:

• identifying specific issues (with examples)
• meeting with the employee and explaining the concerns
• giving the employee an opportunity to respond
• offering support, training, or clear direction where appropriate
• setting reasonable expectations for improvement and a timeframe
• considering the employee’s response before making any final decision

In many workplaces, it’s sensible to handle probation issues using a structured performance approach, rather than “informal chats” that leave room for misunderstandings later. A documented performance management process can make it much easier to show you acted reasonably and fairly.

3) Notice Periods Still Matter

Probation doesn’t automatically mean “no notice”. Your employment agreement should state what notice applies, and you should follow it unless there’s a lawful basis not to (for example, serious misconduct in some cases - and even then, process still matters).

If you’re thinking about ending employment, it’s important to approach it carefully. Getting the process wrong can expose your business to personal grievance risk and unnecessary cost. If you’re unsure about the steps, it can help to read up on how to terminate an employee and get advice before you act.

How To Run A Probationary Period Well (A Practical Checklist)

A strong probationary period is less about “testing” someone and more about setting the working relationship up for success - with clear expectations and a fair opportunity to perform.

Here’s a practical way to run probationary periods in a small business, without overcomplicating it.

Step 1: Set Expectations Clearly In Week One

In the first week, make sure the employee understands:

• their key responsibilities
• what “good performance” looks like in your business
• how you’ll communicate (e.g. daily check-ins, weekly meetings)
• who they report to and how feedback will be given

This is also a good time to confirm practical details: hours, breaks, tools, uniform, health and safety processes, and any confidentiality requirements.

Step 2: Train Properly (And Document It)

One of the easiest ways for probation to become legally risky is where performance concerns are actually training or onboarding failures.

Keep a simple record of:

• training provided
• any manuals, SOPs, or job aids given
• who trained the employee and when
• what tasks the employee has been signed off on

You don’t need a complex HR system - even a dated checklist can help.

Step 3: Hold Regular Check-Ins (Not Just One Big Review)

Leaving feedback until the end of probation is a common mistake. If you’ve had concerns for weeks but haven’t raised them, it’s hard to argue the employee had a fair chance to respond and improve.

Instead, schedule probation check-ins like:

• Week 2: early feedback and “any blockers?” discussion
• Midpoint: performance review against expectations
• Final 1–2 weeks: confirm whether standards are met or whether further steps are needed

Step 4: If Issues Come Up, Be Specific And Give A Chance To Improve

If something isn’t working, be clear about:

• what the issue is (behaviour or performance)
• examples (dates, incidents, work outputs)
• what improvement looks like
• how you’ll support them
• when you’ll review progress

This is often the point where businesses ask whether the person should be an employee at all. If the role is genuinely more like an independent contractor arrangement, it’s worth getting advice early - misclassifying workers can create serious risk. If you do engage contractors, it helps to put the right documents in place, like a tailored contractors agreement.

Step 5: Confirm The Outcome In Writing

At the end of probation, confirm the outcome in writing:

• Probation successfully completed: confirm ongoing employment and any next steps (e.g. future performance goals).
• Probation extended: be careful here - extensions should be reasonable, clearly documented, and ideally agreed to in writing (and you should explain why the extension is needed and what support will be provided).
• Employment ending: follow a fair process and provide notice as required.

Common Mistakes Employers Make With Probationary Periods

Probationary periods are simple in concept, but employers can run into problems when they rely on assumptions rather than process.

Here are some common pitfalls we see.

Assuming Probation Means “No Rights”

As mentioned earlier, probationary periods don’t remove legal protections. If you terminate someone without a fair process, the fact they were “on probation” may not save you.

Using A Generic Template Clause

A generic probation clause often doesn’t match your role, your notice provisions, or how your business actually operates.

This can create uncertainty like:

• no clear review process
• conflicting notice terms
• unclear performance expectations
• language that implies you can dismiss without process

Probation clauses work best when they’re integrated into a properly structured agreement, and aligned with how you manage staff day-to-day.

Not Keeping Notes Of Feedback And Meetings

If performance concerns are raised later (for example, through a personal grievance), your ability to show what happened will matter.

You don’t need to write an essay after every conversation, but keeping simple records like meeting dates, key points discussed, and agreed next steps can make a big difference.

Moving Too Fast (Or Too Slow)

Sometimes employers terminate at the first sign of trouble, without giving the employee a fair chance to improve.

Other times, employers wait until probation ends, then try to address issues that have been ongoing since week two.

Generally, the safer approach is to act early, be clear, provide support, and review progress at sensible intervals.

Confusing Probation With “Casual” Employment

In New Zealand, “casual” isn’t a shortcut to avoid obligations. If the relationship has regular and ongoing work patterns, a person may be a permanent employee in practice (with entitlements and protections), even if you call them “casual”.

If you’re uncertain what type of employment arrangement fits your staffing needs, it’s worth getting advice before hiring.

Key Takeaways

• Probationary periods can be a useful tool for small businesses to assess performance and fit early, but they don’t remove employee rights.
• Probationary periods are different from 90-day trial periods, and mixing the two up can create legal risk.
• Your probationary period should be clearly set out in the written employment agreement, agreed before the employee starts work.
• During probation, you still need to act in good faith and follow a fair process if performance issues arise or if you’re considering dismissal.
• Running probation well usually means clear expectations, proper training, regular check-ins, documented feedback, and a written outcome at the end.
• Common mistakes include relying on template clauses, failing to document performance discussions, and assuming probation allows termination without procedure.

If you’d like help putting the right probationary period wording in place (or reviewing how you’re managing probation in your business), you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.