Yes, an employer can usually extend a probation period in Australia if the employment contract allows it or the employee agrees to the change before the original probation period ends. An extension should be documented in writing, have a genuine business reason, and must not be used to avoid minimum employment, notice, discrimination or general protections obligations.

For employers, the practical question is not simply whether probation can be extended. It is whether the extension is contractually valid, how it affects the employee’s rights, and what process should be followed if the employee still does not meet the role’s requirements. This guide explains the safer approach under the Fair Work Act 2009.

Can an employer extend a probation period?

An employer may be able to extend probation where the original employment contract contains an extension mechanism, the contract clearly states that probation is subject to review, or the employee agrees to a written variation. A common reason is that the employer has not had enough time to assess performance because of approved leave, training delays, seasonal workload, changes in supervision or a material change in the role.

There is no general Fair Work rule that automatically permits an employer to keep extending probation indefinitely. Probation is primarily a contractual arrangement. The employer must therefore check the written contract, any applicable modern award or enterprise agreement, and the employee’s actual service history before acting.

What should an employer check before extending probation?

1. Read the employment contract

Look for the probation length, review date, notice clause and any wording about extension. A clause that says probation may be extended at the employer’s discretion should still be exercised reasonably and consistently. If the contract says probation is three months without an extension right, imposing a new term unilaterally may create a dispute about whether the employee accepted the change.

2. Check the real service date

Extending probation does not reset the employee’s start date. It also does not remove minimum entitlements. The employee remains entitled to applicable wages, leave accrual, superannuation, record keeping and other protections from the beginning of employment. Employers should not describe an extension as a “new start” unless the employment has genuinely ended and a new arrangement is legally appropriate.

3. Consider unfair dismissal eligibility

Probation does not create a blanket exemption from unfair dismissal law. Generally, an employee needs at least six months of service before making an unfair dismissal application, or 12 months where the employer is a small business with fewer than 15 employees. The minimum employment period is measured by service, not by the date the employer says probation ended.

Once the relevant service period is reached, ending employment because an employee is “still on probation” does not remove the need for a valid reason and a fair process. Employers should review the Fair Work Commission’s unfair dismissal guidance when assessing dismissal risk.

How should an employer extend probation fairly?

A short, documented process is usually safer than a last-minute email. Employers should follow these steps:

1. Review performance early. Do not wait until the final week. Compare the employee’s work against the position description, agreed objectives, training records and reasonable standards.
2. Meet with the employee. Explain what is going well, identify the specific gaps, and give the employee a reasonable opportunity to respond.
3. Set measurable expectations. Use examples, deadlines and support arrangements. “Improve attitude” is weaker than “submit client reports by 4pm each Friday with no unresolved data errors.”
4. Propose the extension in writing. State the new end date, the reason, the performance expectations, the review date and the notice clause that will apply.
5. Obtain agreement where required. Have the employee sign or otherwise clearly accept the variation. Keep the original contract and the variation together in the employment record.
6. Review before the new deadline. Decide whether the employee has met the standards, whether further support is reasonable, or whether a separate termination process is required.

Employers can use a structured employment contract review process to check that the variation does not conflict with the National Employment Standards or an applicable award.

Can an employer extend probation without the employee’s agreement?

Sometimes a contract gives the employer a clear right to extend probation without a separate agreement. Even then, the employer should notify the employee before the original end date and explain the new terms. If the contract contains no extension power, a unilateral extension is more vulnerable to challenge, particularly if it changes an important contractual entitlement or is imposed after the original probation period has already expired.

Silence is not always reliable evidence of agreement. If the employee refuses the proposed variation, the employer should obtain specific employment-law advice rather than assuming the extension is valid. The employer may still be able to manage performance under the existing contract, but that is different from treating the employee as permanently “on probation.”

Does extending probation change the notice period?

Usually, no. The notice period comes from the employment contract, applicable award or the National Employment Standards, whichever provides the relevant entitlement. Fair Work guidance confirms that employees are generally entitled to notice even when employment ends during probation. An extension should not be used to reduce notice below the applicable minimum.

Employers should also check whether the employee’s contract contains a longer notice period than the minimum. If the contract does not clearly make notice conditional on probation, ending employment during an extended probation period may still require the contractual notice period or payment in lieu. See the Fair Work Ombudsman dismissal guidance before finalising the decision.

What are the risks of extending probation?

The main risks are uncertainty, inconsistent treatment and poor documentation. An extension may be problematic if the employer uses different rules for comparable employees, extends probation because of a protected attribute or workplace right, gives no meaningful feedback, or waits until after the original end date to announce the change.

There can also be a practical culture cost. Employees are more likely to accept a short extension when they understand exactly what must improve and what support will be provided. An open-ended extension can look like the employer has already decided to dismiss but is delaying the conversation.

Keep records of the review meeting, examples of performance, training offered, the employee’s response, the signed variation and the final decision. Good records do not guarantee a dispute will not occur, but they help show that the decision was based on genuine, documented business reasons.