Terminating an employee in Australia is rarely lost on the reason. It is lost on the paperwork. Under the Fair Work Act 2009, the Fair Work Commission can find a dismissal harsh, unjust or unreasonable even where the underlying reason was perfectly valid, simply because the employer could not show a fair process on paper. That single feature of the law explains why termination letters and warning documentation matter far more than most business owners assume. This guide walks through who can bring an unfair dismissal claim, what the Commission looks for, and how to build the written record, warnings, performance management, and the final letter, that turns a defensible decision into a defensible outcome.
The reasons employers lose these cases are stubbornly consistent, and almost all of them are avoidable with documents prepared before the conversation rather than reconstructed after it.
What counts as unfair dismissal
A dismissal is unfair when the Commission finds it was harsh, unjust or unreasonable, was not a genuine redundancy, and, for a small business, was not consistent with the Small Business Fair Dismissal Code. "Dismissal" reaches beyond the obvious case of firing someone. It also captures a forced resignation, where the employee was effectively pushed out by the employer's conduct, which is why an employer who makes conditions intolerable and then accepts a resignation has not sidestepped the regime at all.
Not every worker can bring a claim, and the eligibility filters matter. An employee must have served the minimum employment period, which is six months for a business with 15 or more employees and twelve months for a small business with fewer than 15, counted by headcount including regular and systematic casuals. They must also earn below the high-income threshold, currently $183,100 and indexed each July, unless they are covered by a modern award or an enterprise agreement, in which case the threshold does not bite. And the claim must be lodged within a strict window. An unfair dismissal application must reach the Commission within 21 calendar days of the dismissal taking effect, and extensions are granted only in exceptional circumstances. For an employer, those filters are the first thing to check, because a claim that falls outside them can be met at the threshold rather than fought on the merits.
Legal framework
Unfair dismissal sits in Part 3-2 of the Fair Work Act 2009 (Cth), and the governing test asks whether the dismissal was harsh, unjust or unreasonable, applied so as to give a "fair go all round" to both sides. In deciding that question the Commission weighs a defined set of considerations: whether there was a valid reason related to capacity or conduct, whether the employee was notified of that reason, whether they were given an opportunity to respond, whether they were allowed a support person at any discussion about termination, and, for performance cases, whether they were warned about unsatisfactory performance before being dismissed. The Commission's own overview of the unfair dismissal jurisdiction, published by the Fair Work Commission's guidance on the unfair dismissal process, sets out how these criteria are applied.
For a small business, the Small Business Fair Dismissal Code offers a distinct and valuable path. Compliance with the Code provides a strong defence to a claim, but the protection is not automatic, a misconception that catches many owners out. The Code permits summary dismissal where the employer reasonably believes the conduct is serious enough to justify immediate termination, and otherwise requires a valid reason, a warning that the job is at risk, a genuine chance to improve, and an opportunity for the employee to respond. If the employer cannot tick every box, the Code cannot be relied on. Where the Commission finds a dismissal unfair, the remedies are reinstatement or compensation, the latter capped at the lesser of 26 weeks' pay or half the high-income threshold. A flawed process can render a dismissal unfair even where a sound reason existed, which is precisely why the documentation, and not just the decision, decides these cases.
Why the written record wins or loses the case
The Commission does not sit in the room when a manager raises a performance concern, and it will not take the employer's word for what was said. It reads the file. A dismissal supported by dated warnings, a documented performance plan, meeting notes recording the employee's response, and a termination letter that states the reason clearly is a dismissal the employer can defend. The same dismissal, resting on a verbal conversation nobody wrote down, is one the employer will struggle to prove, regardless of how justified it actually was.
This is the heart of the practical problem. Employers tend to focus on whether they had a good reason, which is the substantive question, and neglect whether they can show a fair process, which is the procedural one. The Commission's consistent message is that both matter, and that a good reason handled badly still produces an unfair dismissal. In performance cases especially, the sequence has to be visible: the employee was told what the problem was, told how to fix it, told that their job was at risk if they did not, given a reasonable period and support to improve, and given a genuine chance to respond before the final decision. Each of those steps should leave a written trace. Building that record starts at the beginning of the relationship, with a clear Australian employment contract setting out duties and standards against which later performance can be measured, because a manager cannot fairly discipline against expectations that were never documented.
Getting warnings and performance management right
A warning is not a formality to be rushed through the day before termination. To carry weight with the Commission, a warning must identify the specific problem, whether conduct or performance, explain what acceptable performance looks like, set a reasonable timeframe for improvement, and state plainly that continued failure may lead to dismissal. That last element is the one employers most often omit, and its absence is fatal in performance cases, because an employee who was never told their job was on the line was never given the fair opportunity the Act requires. A structured warning letter and performance improvement plan does this work in a form the Commission recognises, recording the issue, the expected standard, the review period and the consequence in a single dated document.
The performance improvement plan carries the process across time. It sets measurable objectives, a defined review period, and scheduled check-ins, and it should record the employee's response at each stage, including any personal circumstances affecting their work, which the employer is expected to take into account. The requirement to allow a support person at any meeting where dismissal is discussed is easy to satisfy and expensive to overlook: refusing or failing to offer one is a procedural defect the Commission will note. Conduct cases run on a related but distinct track. Serious misconduct, theft, fraud, a genuine safety breach, may justify summary dismissal, but even then the employer must hold a reasonable belief based on a proper inquiry, and must give the employee a chance to respond before deciding. Casual and probationary arrangements have their own contours, and a properly drafted casual employment contract reflecting the current definition of casual work reduces the risk of a casual being found to have the regular pattern that opens the door to a claim.
Preparing your termination documents on Captain.Legal
The safest way to approach a termination is to assemble the documents in the order the process demands rather than reaching for the termination letter first. That means starting with the warning and the performance plan where the issue is capacity or conduct short of serious misconduct, running the review period genuinely, and only then, if improvement does not come, moving to the final letter. Each document you generate becomes part of the file the Commission may later read, so consistency between them matters as much as the content of any one.
Working through the Australian employment document templates, you select the document that fits the stage you are at, a warning letter and PIP to open a performance process, or a termination letter to close one. The termination letter prompts you to state the reason, the effective date, the notice period or payment in lieu, and the final pay entitlements, so nothing that the Commission expects to see is left out by accident. You confirm the business size, which determines whether the Small Business Fair Dismissal Code path applies, and the document reflects that. The output downloads in Word and PDF, letting you tailor the particulars to the individual matter and retain a clean signed copy for the file. Related business documents, including confidentiality terms that survive the end of employment, sit in the Australian business agreement templates.
Common mistakes to avoid
The most damaging error is dismissing on a verbal record. The reason may have been sound, but without dated warnings, notes and a written termination letter, the employer cannot prove the process, and the Commission decides on what it can see. Close behind is the missing risk warning: an employer runs a performance conversation, even several, but never tells the employee in writing that their job is at risk, so the Act's warning requirement is not met and the dismissal turns unfair despite genuine underperformance.
Third, small business owners assume the Code protects them automatically, when in truth it protects them only if every step was followed and documented; an owner who cannot tick all the boxes cannot rely on it. Fourth, employers deny or forget the support person, a small procedural failure that the Commission treats seriously because it goes to the fairness of the discussion itself. Fifth, and increasingly common, dismissals are communicated by text message or email with no meeting at all, which the Commission regards as a strong indicator of an unfair process regardless of the underlying merits. A final trap is mislabelling a dismissal as a redundancy to avoid the performance process, because a redundancy that is not genuine, where the role continues or no consultation occurred, is reviewed as an ordinary dismissal and usually fails.
Frequently asked questions
Is a termination letter generated online legally valid in Australia?
A termination letter's validity comes from its content and the process behind it, not from where it was drafted. A letter that states a valid reason, the effective date, the notice period or payment in lieu, and the final pay entitlements, issued at the end of a fair process, operates as a proper record of the dismissal and is exactly what the Fair Work Commission expects to see on the file. What the letter cannot do is cure a defective process: if there were no warnings in a performance case, or no opportunity to respond, a well-drafted letter will not save the dismissal. Treat the letter as the last step in a documented sequence, not as a substitute for one.
How much notice do I have to give when terminating an employee?
Minimum notice periods are set by the Fair Work Act 2009 and scale with the employee's length of continuous service, ranging from one week for short service up to four weeks, with an additional week for employees over 45 with at least two years of service. Notice can be given as worked notice or as payment in lieu. These are minimums, and an employment contract or applicable award may require more, so the contract should always be checked before the figure is set. Summary dismissal for serious misconduct is the exception, permitting termination without notice, but only where the misconduct genuinely meets that high bar and a proper inquiry supports it.
How long does an employee have to bring an unfair dismissal claim?
The deadline is strict: an unfair dismissal application must be lodged with the Fair Work Commission within 21 calendar days of the dismissal taking effect. The Commission will extend that period only in exceptional circumstances, which are narrowly construed, so in practice the window is genuinely 21 days. For employers this cuts both ways. It means a claim arriving after the deadline can be challenged at the threshold, and it means the days immediately after a termination are the ones in which a claim is most likely to land, so the file should be complete and accessible before the letter is even issued rather than assembled in a hurry once an application appears.
Does the Small Business Fair Dismissal Code protect my business automatically?
No, and this is one of the most common and costly misunderstandings. The Code is available to businesses with fewer than 15 employees, but it provides a defence only where the employer actually followed and can demonstrate its requirements. For a non-summary dismissal that means a valid reason, a warning that the job was at risk, a genuine opportunity to improve, and a chance for the employee to respond. For summary dismissal it means a reasonable belief, based on a proper inquiry, that the conduct justified immediate termination. If any element is missing or undocumented, the Code cannot be relied on, and the dismissal is assessed on ordinary unfair dismissal principles.
What format can I download the documents in?
Termination letters, warning letters and performance improvement plans download in both Word and PDF. The Word file lets you tailor the particulars to the specific matter, the dates, the conduct or performance issue, the review period, the notice figure, which is essential because no two dismissals are identical and a generic letter invites challenge. The PDF gives you a clean, fixed copy to sign and retain. Keep every document in the sequence together, the warnings, the plan, the meeting notes and the final letter, because it is the coherence of that whole file, rather than any single page, that the Commission examines if a claim is made.
Can I dismiss an employee for poor performance straight away?
Only in narrow circumstances. Poor performance, as opposed to serious misconduct, almost always requires a process first: telling the employee what the problem is, setting out the standard expected, warning them that their job is at risk, giving them a reasonable period and support to improve, and considering their response before deciding. Dismissing for underperformance without that sequence is the classic way employers lose otherwise defensible cases. Immediate dismissal is reserved for serious misconduct, and even then a reasonable inquiry and a chance to respond are expected. If the performance issue is genuine but the process has not been run, the safer course is to start the documented process rather than terminate on the spot.
What is the difference between unfair dismissal and a general protections claim?
They are separate regimes with different reach. Unfair dismissal under Part 3-2 asks whether the dismissal was harsh, unjust or unreasonable, is subject to the eligibility filters and the high-income threshold, and caps compensation. A general protections claim, by contrast, targets dismissals connected to a prohibited reason, such as exercising a workplace right, taking sick leave, or a discriminatory ground, is not subject to the high-income threshold in the same way, and carries uncapped compensation. A dismissal handled on improper grounds can attract both. This is why documenting a legitimate performance or conduct reason matters beyond the unfair dismissal context: a clear, lawful reason on the file is also the best answer to any suggestion that the real reason was a prohibited one.