What makes a written warning valid in Australia?

A valid warning needs to: (1) specify the exact allegation with dates and details (not 'attitude problems'), (2) give you a chance to respond before being issued, (3) allow a support person at any meeting (s387(d) FW Act), (4) be in writing, (5) state the consequences of failure to improve (i.e. dismissal), (6) give a reasonable improvement period, (7) be proportionate to what you did (no sledgehammer for nuts), and (8) be applied consistently across the workforce. Missing any of these weakens the warning's legal standing if the employer relies on it to support a later dismissal.

Can I be sacked after one written warning in Australia?

Generally no — for ordinary performance or conduct issues, employers usually need to give multiple warnings (often three) before dismissal becomes proportionate. The Fair Work Commission applies a proportionality test under s387: was the response to the conduct fair and reasonable? Single-warning-then-dismissal is sometimes valid for serious misconduct (theft, violence, breach of confidentiality), but for typical performance or attendance issues it's usually flagged as procedurally flawed.

Do I have to sign a written warning?

No. Signing a warning often just acknowledges receipt — it doesn't admit the allegations are true. But you can refuse to sign, or sign with a written objection ('I sign as receipt only — I dispute the contents'). Don't sign anything that says 'I agree with the contents' or 'I acknowledge the conduct described' if you don't agree. Take the warning home, read it carefully, respond in writing within a few days setting out your factual position.

What should I do if I get a written warning I think is unfair?

Respond in writing within a few days — a brief, factual letter setting out your version of the events. Don't admit to anything you don't agree with. Don't resign in response. Keep copies of everything (original warning, your response, all communications) in your personal email, not just work systems. If a dismissal follows, you have 21 days to lodge an unfair dismissal claim at the FWC and the warning's flaws become part of your evidence.

Can my boss give me a verbal warning instead?

Yes, but verbal warnings carry much less weight. Section 387(e) of the Fair Work Act asks whether the worker was warned about unsatisfactory performance — if the only evidence is the manager's say-so, the FWC tends to discount it. Best practice is for warnings to be in writing, with you receiving a copy. If your employer is relying on prior verbal warnings to support a current written warning, ask for documentary evidence of those verbal warnings (file notes, follow-up emails).

Disciplinary Warning Validity Checker

Got a written warning from your boss? Eight questions, built on the FWC's s387 procedural-fairness factors. Tells you if the warning would survive an unfair dismissal challenge — and what to do.

Last verified: 2 August 2026

Question 1 of 8

Does the warning specify exactly what you did wrong, with dates and details?

A valid warning must say what — specific incidents, dates, what was said or done. 'Attitude problems', 'communication issues', or 'not meeting expectations' are too vague and routinely struck down.

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Disciplinary Warning Validity Checker

Does the warning specify exactly what you did wrong, with dates and details?

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