UK & Aus Employers: 6 Steps to a Defensible Poor Performance Dismissal

You can lawfully dismiss an employee for poor performance when you have a genuine capability reason and you follow a fair process, tested in the UK against the Acas Code and in Australia against the Fair Work “harsh, unjust or unreasonable” standard. The minimum path looks the same almost everywhere: notify the employee, investigate, give a real opportunity to improve, document every step, and offer an appeal. Probationary staff, employees with disabilities, and small businesses each face adjusted expectations, which we cover below.

TL;DR:

• Employers must conduct thorough investigations and provide documented evidence before holding formal performance review meetings.
• Performance improvement plans should set specific, measurable goals with clear timelines, and include documented support and regular review meetings.
• Maintaining detailed, contemporaneous records of all steps, from warnings to training and decision-making, is critical for defending the fairness of the dismissal.
• Small businesses and employees with disabilities have adjusted expectations and may require reasonable adjustments or simplified procedures during capability processes.
• Final dismissal decisions should be made by an appropriately senior or independent person and communicated in a written notice with an opportunity for a fair appeal.

Table of Contents

• Legal tests by jurisdiction: UK, Australia, and a South African note
• Step-by-step fair-procedure checklist employers must follow
• How to design and run a defensible performance improvement plan
• Evidence, documentation and common pitfalls that lose cases
• Special cases: probation, disability adjustments, and small-business rules
• Making the final decision, communicating dismissal, and handling appeals
• A practical HR checklist and two habits worth keeping
• If you employ in South Africa, consider local support for offboarding
• Sources
• FAQ

Legal tests by jurisdiction: UK, Australia, and a South African note

Each jurisdiction frames the question differently, but all three ask whether the employer acted reasonably and gave the employee a genuine chance to fix the problem.

• United Kingdom: capability is a fair reason for dismissal, but tribunals measure the process against the Acas Code of Practice, and a valid reason paired with a sloppy process can still produce an unfair dismissal finding.
• Australia: the Fair Work Commission asks whether the dismissal was harsh, unjust or unreasonable, weighing whether there was a valid reason, whether the employee got a chance to respond, and whether they were warned about unsatisfactory performance.
• Small businesses in Australia: the Small Business Fair Dismissal Code gives smaller employers a simplified compliance path, provided they warn the employee and document the process.
• South Africa: the CCMA distinguishes incapacity (poor performance) from misconduct, and expects a supportive, evaluative process rather than a punitive one before dismissal is considered.

Step-by-step fair-procedure checklist employers must follow

Tribunals and commissions do not expect perfection, but they do expect a traceable sequence of actions. Follow this order and keep evidence at every stage.

1. Investigate the performance concern and gather objective evidence before calling any formal meeting.
2. Tell the employee what the problem is and share the evidence in advance so they can prepare a response.
3. Hold a formal meeting, confirm their right to be accompanied, and take detailed notes.
4. Issue a warning where appropriate and set measurable improvement targets with a clear timeline.
5. Offer training or support and record what was offered and whether the employee took it up.
6. Deliver a reasoned written decision, covering notice or pay in lieu, and explain the right to appeal.

Acas guidance treats dismissal as a last resort and warns against “surprise” outcomes that skip the earlier steps entirely, which is one of the fastest ways to lose a tribunal case on procedure alone, even when the underlying performance problem is real.

Pro Tip: Send meeting invitations and supporting evidence in writing, every time, even for what feels like an informal chat.

How to design and run a defensible performance improvement plan

A performance improvement plan (PIP) only holds up if it reads as genuine support rather than a formality on the way to a decision already made. South African guidance makes the same point: what matters is whether real evaluation, instruction and training were provided, not what the document is called.

• Set specific, measurable expectations tied directly to the employee’s actual role duties, with a realistic timeframe attached.
• Record every training session, coaching conversation and piece of support offered, and measure the outcome against agreed metrics.
• Hold documented review meetings at fixed intervals rather than leaving progress to informal check-ins.
• State clear success criteria and exit triggers in writing so the employee knows exactly what improvement looks like.
• Where disability may be a factor, record any reasonable adjustment discussions and any medical input received.

Fair Work’s guidance notes that a documented, regular review process, paired with honest performance conversations, is central to a defensible capability case rather than an afterthought filed once a decision is made.

Evidence, documentation and common pitfalls that lose cases

Tribunals and commissions rely heavily on paper. Multiple official sources point to the same conclusion: documentary records carry more weight than a manager’s recollection of events months later.

• Keep meeting invitations, evidence sent in advance, formal notes, PIP records, written warnings, training logs and objective performance metrics.
• Watch for the recurring mistakes: informal chats that never get written up, inconsistent standards applied across different staff, and using a misconduct process to handle what is really a capability issue.
• Maintain an audit trail with dated copies, consistent templates, and a clear signoff on every decision made along the way.

Treating incapacity as misconduct is a particularly common error in South Africa, and it tends to produce adverse CCMA rulings because the two processes serve different purposes and carry different expectations.

Special cases: probation, disability adjustments, and small-business rules

A handful of situations shift the baseline expectations, and it pays to know which rules apply before you act.

• Probation: evidentiary expectations are often lower, but employees still need clear guidance on what is expected and a chance to respond to concerns.
• Disability: consider reasonable adjustments and get medical input before moving toward dismissal, since the process itself may need to change to remain fair.
• Small businesses (Australia): follow the Small Business Fair Dismissal Code and keep its checklist as your primary evidence of a fair process.

Making the final decision, communicating dismissal, and handling appeals

The last stretch of the process is where a well-run capability case can still be undone by a rushed decision or a poorly delivered message.

1. Use an appropriately senior or independent decision maker, and record who had the authority to decide and why.
2. Communicate the dismissal in writing with clear reasons, notice or pay in lieu entitlements, and the employee’s severance or termination position where relevant to their contract terms.
3. Offer a genuine appeal, run it fairly, and retain every record generated during the process.
4. Be prepared for the appeal or a tribunal claim to result in reinstatement, sometimes called a “vanishing dismissal,” so keep the file intact well beyond the decision date.

Acas’s step-by-step guidance on disciplinary outcomes is built around exactly this sequence: progressive warnings, clear notices, and a written outcome before dismissal becomes the only fair option left on the table.

A practical HR checklist and two habits worth keeping

The checklist you actually need is shorter than most policies suggest: notify the employee, investigate properly, hold the meeting, start the PIP, and document everything as you go. Keep objective metrics and contemporaneous notes rather than relying on memory weeks later, and never let a dismissal arrive as a surprise with no paper trail behind it. Escalate to legal advice as soon as disability, whistleblowing, or a protected characteristic enters the picture, since those cases carry risks that a standard capability process does not cover.

— Roel

If you employ in South Africa, consider local support for offboarding

Running a capability process on South African soil adds a layer most overseas HR teams have not navigated before, from CCMA expectations to the incapacity-versus-misconduct distinction covered earlier. There are Employer of Record services for South Africa that handle BCEA-compliant contracts, ZAR payroll, and statutory filings, with dismissal guidance built around CCMA expectations rather than generic global templates.

Working through a licensed local partner means the contract, the payroll obligations, and the offboarding documentation sit with people who handle South African incapacity cases regularly, which reduces the administrative load on a distant HR team managing an unfamiliar process. If you need to calculate what a termination looks like on the payroll side, our severance pay reference walks through the entitlement calculation, and full pricing details are available for employers weighing an EOR against building the process in-house.

Sources

Before running a capability process, check the Acas Code, GOV.UK dismissal guidance, Fair Work’s unfair dismissal pages, and CCMA incapacity guidance for South Africa.

• Gov
• Small Business Fair Dismissal Code 2011 – Fair Work
• Unfair dismissal – Fair Work Ombudsman

FAQ

Can you be dismissed for poor performance?

Yes, poor performance, also called capability or incapacity, is a recognized fair reason for dismissal in the UK, Australia, and South Africa. It only becomes lawful when the employer also follows a fair process, including warnings, support, and a genuine opportunity to improve.

What should I do if I get fired for poor performance?

Request the written reasons for the dismissal along with any notice or pay in lieu owed, and check whether the employer followed its own capability process. If key steps like warnings, a PIP, or an appeal were skipped, you may have grounds to challenge the dismissal through a tribunal or the Fair Work Commission.

How do employers terminate someone for poor performance?

Employers should investigate the concern, notify the employee, run a documented performance improvement plan with measurable targets, and hold formal meetings before any warning or dismissal decision. Every stage, including training offered and outcomes measured, needs a written record, with a clear appeal route offered at the end.

Can an employer dismiss an employee for poor performance without warning?

Generally no. Acas guidance treats dismissal as a last resort and warns against surprise decisions that skip prior warnings, support, and documented review, since skipping these steps is one of the most common reasons a dismissal is found unfair.