Extending Probation Periods: Employer’s Legal Guide In Australia

Probation periods help you and a new hire work out whether the role is the right fit. They’re common, useful and, when handled well, can set up a strong long‑term working relationship.

But what if you’re not quite ready to make a decision at the end of probation? Can you legally extend a probation period in Australia? The short answer is yes - provided your process and paperwork are in order.

In this guide, we’ll unpack what a probation period is (and isn’t), how it interacts with the minimum employment period for unfair dismissal, and the practical steps to extend probation fairly and lawfully. We’ll also cover notice and termination risks to help you avoid common pitfalls.

What Is A Probation Period?

A probation period is a set timeframe at the start of employment (often three to six months) when both parties assess suitability for the role. During this time, you’ll typically provide feedback, monitor performance and confirm whether the engagement should continue beyond probation.

Probation terms aren’t specified by legislation. Instead, they’re created by contract. This means the length, review process and any option to extend should be clearly set out in the Employment Contract.

In practice, probation helps you assess whether:

• Performance meets the role’s expectations.
• Behaviour aligns with values and policies.
• The employee can perform the inherent requirements of the job with reasonable support.

Minimum Employment Period Vs Probation: What The Fair Work Act Says

This is where confusion often arises. The Fair Work Act 2009 (Cth) doesn’t create or regulate “probation periods.” Instead, it sets a “minimum employment period” that affects when an employee can make an unfair dismissal application.

Here’s the key distinction:

• Probation period - a contractual period you set in the Employment Contract.
• Minimum employment period - a statutory period under the Fair Work Act that determines access to unfair dismissal (generally six months for non‑small businesses, or 12 months for small businesses with fewer than 15 employees).

These are different concepts. A contract could specify a three‑month probation, but the minimum employment period still runs from day one of employment. Once the minimum employment period has passed, the employee may be eligible to lodge an unfair dismissal claim, regardless of whether you still consider them to be “on probation.”

It’s also worth noting that unfair dismissal is only one risk. General protections (adverse action) claims can arise at any time during employment - even within probation and even before the minimum employment period has passed.

If you need a refresher on what the Fair Work Commission looks at when assessing whether a dismissal was harsh, unjust or unreasonable, see the criteria in section 387 of the Act.

Can You Extend A Probation Period In Australia?

Yes, you can extend a probation period - provided you follow the contract and obtain agreement where required.

There’s no rule in the Fair Work Act that prohibits extending probation. Equally, there’s no rule that extending probation delays or “pauses” the minimum employment period. Extending probation is a contractual step; unfair dismissal eligibility is a statutory step tied to total service.

In practice, this means:

• You can extend probation if your Employment Contract allows you to do so, or if the employee agrees to a variation in writing.
• Extending probation does not stop the clock on the minimum employment period for unfair dismissal eligibility.
• If the extension takes total service beyond six or 12 months (depending on business size), the employee may now be able to bring an unfair dismissal claim (in addition to other potential claims, such as general protections).

Common reasons employers extend probation include disrupted onboarding (e.g. unexpected leave, project delays), borderline performance where extra support may reasonably bring the employee up to standard, or where additional time is needed to fairly complete a performance improvement plan.

How To Extend A Probation Period Lawfully (Step‑By‑Step)

Here’s a simple process that balances legal compliance with a respectful employee experience.

1) Check The Contract

Confirm what your Employment Contract says about probation and extensions. Some contracts give you a unilateral right to extend (usually for a specified period) if you provide written notice before probation ends. Others are silent or require mutual agreement.

If your contract doesn’t contemplate an extension, you’ll need the employee’s informed, written agreement. Any changes to employment terms should follow a proper process - our guide on changing employment contracts outlines the key principles.

2) Communicate Early And Clearly

Don’t wait until the last day. Meet with the employee ahead of time to explain what’s going well, what remains a concern and why an extension is being considered. Be specific about expectations and the support you’ll provide.

3) Set A Clear End Date And Plan

Extensions work best with structure. Set a new probation end date, define performance goals, agree on check‑in points and outline any training or reasonable adjustments. This should be documented in writing.

4) Confirm In Writing

Issue a short letter or email confirming the agreed extension, the new end date, performance measures and the notice that applies. Keep a record on the personnel file. If your contract allowed you to extend unilaterally, still put it in writing for clarity and consistency.

5) Follow Through With Feedback And Support

Regular check‑ins are critical. Provide timely feedback, keep file notes and ensure the employee has a fair opportunity to meet expectations. Consistent process and documentation reduce disputes and support defensible decisions later.

6) Keep Statutory Timeframes In View

Track the employee’s total length of service. If the extension crosses the minimum employment period, your dismissal risk profile changes. If termination becomes necessary, follow a fair process and ensure correct notice is provided - see our overview of notice periods for employers.

Ending Employment During Or After Probation

You can end employment during or at the end of probation, but proper process still matters. This includes giving the correct contractual or statutory notice (or payment in lieu), paying any accrued entitlements and ensuring your reason for dismissal is lawful.

Notice And Final Pay

The National Employment Standards set minimum notice periods based on length of service. Your contract may require more generous notice, but it can’t require less. If you’re considering dismissal, check the notice clause and plan your timing. Our article on termination during probation steps through the process and common risks.

Unfair Dismissal And General Protections

If the total service is shorter than the minimum employment period, the employee generally can’t bring an unfair dismissal claim. Once they pass that threshold, unfair dismissal may be available. Regardless of length of service, adverse action and discrimination claims can be brought if a prohibited reason is involved (for example, extending or ending employment because an employee exercised a workplace right, took sick leave or due to a protected attribute).

Where the minimum employment period has been met, take extra care to follow a fair process. The factors the Commission considers are set out in section 387, including whether the employee was warned about performance and given an opportunity to respond.

Process Matters

Even within probation, it’s best practice to:

• Explain performance issues clearly and early.
• Allow a reasonable opportunity to improve, where appropriate.
• Offer a support person for formal meetings.
• Document conversations and decisions.

Solid process builds trust and reduces legal and reputational risk. Where termination does occur, having a clear letter ready (as part of an employee termination documents suite) helps ensure consistent messaging.

Best Practice Tips And The Documents To Put In Place

A little structure goes a long way. Here’s how to set probation up for success and keep your business compliant.

Contract And Policy Foundations

• Employment Contract: Include a probation clause that sets the initial period, any right to extend, required notice and review obligations. A tailored Employment Contract helps you avoid ambiguity.
• Staff Handbook/Workplace Policies: Make sure your expectations around performance, conduct, leave and complaints are clear. A current Staff Handbook supports consistent management and fair process.
• Probation Review Procedure: Even a short internal checklist (review dates, success criteria, sign‑off) can lift consistency across teams.

Performance And Communication

• Schedule check‑ins: Lock in dates at the start (e.g. week 2, week 6, week 10). Use them to give specific, actionable feedback.
• Be transparent: If issues arise, raise them promptly. Surprises at the end of probation can feel unfair and are harder to defend.
• Document support: Record training offered, clarifications provided and any reasonable adjustments - these details matter.

Common Pitfalls To Avoid

• Letting the probation period lapse: If you intend to extend, communicate and confirm before the original end date.
• Relying on “probation” to avoid process: The label doesn’t override general protections, discrimination laws or, once reached, unfair dismissal rights.
• Missing consent where needed: If your contract is silent on extension, get written agreement from the employee before changing terms.
• Inconsistent treatment: Apply the same approach across comparable roles to reduce claims of unfairness.

Useful Documents For Managing Probation

• Employment Contract: Sets up probation clearly and gives you the mechanism to extend or confirm employment.
• Probation Extension Letter: Confirms the new end date, goals and review schedule.
• Performance Review Template: Prompts objective assessment and consistent records.
• Termination Letter: If employment ends, a clear letter helps outline notice, last day and final pay (see notice obligations in our notice periods guide).

If you’re refreshing contracts or need to introduce an extension mechanism for future hires, it’s sensible to review your documents holistically rather than making ad hoc changes each time.

Key Takeaways

• Probation is a contractual tool; the minimum employment period for unfair dismissal is set by the Fair Work Act and runs from day one of employment.
• You can extend a probation period if your contract permits it or if the employee agrees in writing - but extending probation doesn’t delay unfair dismissal eligibility once the minimum employment period is reached.
• Communicate early, set clear goals and confirm any extension in writing with a definite end date and review plan.
• Give correct notice on termination, follow a fair process and keep robust records, especially once the minimum employment period has passed.
• Strong foundations (a clear Employment Contract and practical policies) make probation management simpler, more consistent and lower risk.

If you’d like a consultation about probation clauses, extensions or termination processes, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.