Not every dismissal is unfair, and not every unfair-looking dismissal uses the ordinary unfair-dismissal test. Start with the actual reason for dismissal, your status and service, the procedure used and whether a special automatically unfair or discrimination route applies.
Use this guide to separate the facts, the legal route and the practical remedy. Workplace disputes often involve more than one right, so keep each strand distinct.
Key points
- Identify the exact decision, event or omission before choosing a legal label.
- Ask who made the decision and which employer policy, contract term or statutory rule is relied on.
- Preserve contemporaneous evidence and the employer’s reasons before memories and records change.
- Protect Acas and tribunal time limits even while an internal process is continuing.
Diagnosis
First: what exactly happened?
Work out which route fits the facts before deciding what to ask the employer to do. Similar workplace problems can use different legal tests.
| What happened? | What to check |
|---|---|
| You were dismissed for conduct | Check investigation, belief in misconduct, procedure, consistency and sanction. |
| You were dismissed for performance or capability | Check support, warnings, targets, adjustments, medical evidence and alternatives. |
| You were dismissed with short service | Ordinary unfair dismissal currently usually requires two years service for dismissals before 1 January 2027, but many automatic-unfair and discrimination claims do not. |
| You say the stated reason is a cover for discrimination or whistleblowing | Focus on the real reason and evidence of timing, comments, comparators, shifting explanations or retaliation. |
Who is responsible?
The employer is responsible for its own employment decisions and processes, even where HR, payroll, occupational health, an external investigator or software supplier is involved. Identify the actual decision-maker and the legal entity that employs you.
Managers and HR may administer a process, but outsourcing advice or relying on a policy does not transfer away the employer’s legal responsibility.
Potentially fair reason is only the start
Conduct, capability, redundancy, statutory restriction and some other substantial reasons can potentially justify dismissal, but the employer still needs a fair basis and procedure under the applicable test.
Short service does not mean no rights
Discrimination, whistleblowing, health-and-safety and various statutory-right dismissals can be protected without the ordinary qualifying period. Contractual notice and wages also remain relevant.
Appeal and internal process
An appeal can correct factual and procedural defects and is usually worth considering. But it does not pause the tribunal clock.
2027 transition
For dismissals from 1 January 2027, the government has confirmed the ordinary unfair-dismissal qualifying period will reduce to six months and the compensatory award cap will be removed. Check the dismissal date carefully.
Dismissal and unfair dismissal are not the same question.
A dismissal can occur in several ways. Whether it is legally unfair depends on matters including employment status, qualifying service, the employer’s reason, the procedure used and whether an automatically unfair or discrimination-related rule is engaged.
The ordinary qualifying period is still two years today.
As at 9 September 2026, employees usually need two years’ qualifying service for ordinary unfair-dismissal protection, subject to important exceptions where no ordinary qualifying period is required. From 1 January 2027, the qualifying period for ordinary unfair dismissal is due to reduce to six months.
Preserve the reason and the process.
Keep the dismissal letter, disciplinary or capability material, meeting notes, appeal documents and any earlier explanation of the reason. If the reason changes over time, preserve each version.
Appeal if there is a proper basis, but also check limitation.
An internal appeal can matter to fairness and remedy, but does not by itself stop tribunal time running. Check Acas early conciliation separately. Some specialist claims, including certain interim-relief applications, have much shorter deadlines than the ordinary tribunal limit.
What to challenge in an appeal.
- Reason: identify the actual reason relied on and any evidence suggesting a different reason.
- Investigation: point to material evidence not obtained, tested or disclosed.
- Consistency: identify materially similar cases treated differently, where genuinely comparable.
- Procedure: record lack of notice, opportunity to respond, accompaniment, impartiality or appeal.
- Outcome: explain why dismissal was disproportionate or why alternatives were not properly considered.
An appeal is most useful when it identifies concrete defects and the outcome sought: reinstatement, a lesser sanction, correction of the record or another remedy, rather than simply repeating that the decision was unfair.
The law is changing: use the rule that applies on the effective date of termination.
As at 9 September 2026, ordinary unfair-dismissal protection normally still requires two years’ continuous employment. The Employment Rights Act 2025 reduces that qualifying period to six months from 1 January 2027. The Government and Acas have expressly stated that dismissals with an effective date before 1 January 2027 remain under the current two-year system.
Tribunal time limits are also changing. For most claims whose time limit starts before 1 October 2026, the familiar three-month-minus-one-day framework still applies. For most claims whose time limit starts on or after 1 October 2026, the limit increases to six months minus one day. Do not assume the longer period applies merely because the claim is submitted after 1 October: the start date of the limitation period matters.
Calendar the deadline before doing anything else.
An internal appeal, grievance or negotiation does not itself stop a tribunal limitation period. Acas early conciliation affects the calculation, so preserve the termination date and obtain advice early if the deadline is close.
A fair reason is only part of the test.
For ordinary unfair dismissal, potentially fair reasons include conduct, capability or qualifications, redundancy, illegality, and “some other substantial reason”. But naming one of those labels does not automatically make the dismissal fair. The tribunal looks at the real reason and whether the employer acted reasonably in treating it as sufficient for dismissal.
In misconduct and capability cases, process matters. The employee should ordinarily know the allegation or concern, have a reasonable opportunity to respond, and receive a decision reached after appropriate investigation. The Acas disciplinary Code is particularly relevant to misconduct and poor-performance cases; an unreasonable failure to follow it can affect compensation in qualifying claims.
Ask for the real reason in writing.
Preserve the dismissal letter, disciplinary outcome, notes of meetings and any earlier explanation. If the reason changes between documents, record the contradiction rather than arguing from memory.
First identify the legal complaint: unfair dismissal, wrongful dismissal and discrimination are different.
A dismissal can give rise to more than one legal issue. Ordinary unfair dismissal asks whether the employer had a potentially fair reason and acted reasonably, including following an appropriate procedure. Wrongful dismissal is principally a contract claim: often about notice or contractual procedure. A discriminatory dismissal engages the Equality Act 2010. Automatically unfair dismissal covers specified protected reasons such as certain whistleblowing, health and safety and family-leave situations.
| Issue | Typical question | Service requirement |
|---|---|---|
| Ordinary unfair dismissal | Was there a fair reason and did the employer act reasonably? | Normally 2 years for dismissals before 1 January 2027. |
| Automatically unfair dismissal | Was the real reason one protected by statute? | Many automatically unfair grounds do not require 2 years. |
| Wrongful dismissal | Did the employer breach the contract, especially notice rights? | No ordinary 2-year unfair-dismissal qualifying period. |
| Discrimination | Was dismissal because of, related to or otherwise unlawful under the Equality Act? | No ordinary 2-year qualifying period. |
Do not let an employer’s statement that you have “under two years’ service” end the analysis. It may defeat an ordinary unfair-dismissal claim under the current rule, but it does not answer every possible cause of action.
What can you realistically ask for?
Choose a remedy that matches the problem. Internal processes can often correct a decision or record; statutory compensation and tribunal remedies depend on the legal claim.
- Internal appeal and reinstatement where the employer reverses the decision
- Notice pay or contractual sums where owed
- Reinstatement, re-engagement or compensation where a tribunal claim succeeds
- Declarations/compensation for discrimination or other linked claims where applicable
Evidence worth keeping
Preserve the original record where possible. A short, dated evidence set is usually more useful than an unstructured dump of documents.
Common employer responses - and what they do not necessarily prove
| Employer says | ConsumerWise view |
|---|---|
| “Under two years means you have no rights.” | Wrong. It affects ordinary unfair dismissal under the current pre-2027 rule, but many other rights have no two-year qualifying period. |
| “We can dismiss for any reason during probation.” | Probation does not remove discrimination, whistleblowing, notice/pay and other statutory protections. |
| “There was a potentially fair reason, so procedure does not matter.” | A potentially fair reason is not the whole unfair-dismissal test. |
| “You appealed, so you cannot contact Acas yet.” | An internal appeal does not normally stop limitation. Protect the external deadline separately. |
What to say next
Keep the next response short and issue-led. State the decision you challenge, the evidence or rule you rely on, the specific answer you still need and the remedy you want. If the employer relies on a policy or business reason, ask it to identify the relevant provision and explain how it applies to your facts.
Important overlaps and exceptions
- Redundancy has its own fairness and pay rules.
- Capability dismissals can engage disability adjustments.
- Constructive dismissal concerns resignation in response to employer breach.
- Wrongful dismissal is contractual and is legally different from unfair dismissal.
What to do
A practical next-step plan
- Write down the event or decision, the date, who made it and the practical impact.
- Identify the legal or contractual right that may apply instead of relying only on the word “unfair”.
- Collect the smallest evidence set that proves the key facts and the employer’s stated reason.
- Use the relevant internal request, grievance, appeal or complaint route and ask for a specific remedy.
- Check Acas and tribunal limitation separately. Do not let a slow internal process cause an external deadline to expire.
Escalation and time limits
Internal procedures can be important, but they do not normally stop an employment tribunal time limit. As at 11 September 2026, most claims whose limitation period starts before 1 October 2026 still use the existing three-month-minus-one-day framework. For most relevant time limits starting on or after 1 October 2026, the period increases to six months minus one day.
Acas early conciliation can affect calculation of the deadline if Acas is notified in time. Some claims use different limits, and interim relief in qualifying dismissal cases can require action within only 7 days. Always check the specific claim rather than applying a general period mechanically.
Official sources
Check the current source material.
- GOV.UK: Eligibility to claim unfair dismissal ↗
- Acas: Dismissals ↗
- GOV.UK: Employment tribunals ↗
- Employment Rights Act 2025 implementation timeline: GOV.UK ↗
- Acas: employment tribunal time limits ↗
ConsumerWise provides general information rather than individual legal advice. Check current rules, dates and eligibility against the official source before acting.