Summarily Dismissed: What It Means and When UK Employers Can Use It
Aug 31, 2026
The call comes a fortnight after you walked him off the premises. ACAS early conciliation. You were certain, caught it on camera, cash from the till. You summarily dismissed him on the spot and thought that was the end of it.
It was not.
Summary dismissal is one of the most powerful tools an employer has. It is also one of the most misused. Understanding what it means, when it is lawful, and what process you must follow is the difference between a clean exit and a tribunal claim running to tens of thousands of pounds.
What does summarily dismissed mean?
To be summarily dismissed is to be dismissed immediately, without notice and without payment in lieu of notice. There is no garden leave, no working-out period. The employment ends on the spot.
This is distinct from ordinary dismissal, where the employer gives notice or pays the employee instead of requiring them to work it out. Summary dismissal removes that entitlement entirely. The legal basis is that the employee's own conduct has been so serious it has fundamentally destroyed the employment relationship. In legal terms, the employee's behaviour amounts to a repudiatory breach of contract, and the employer accepts that breach by treating the contract as ended.
The phrases "summary dismissal" and "summarily dismissed" are used interchangeably. What they describe is the same: immediate termination, no notice, justified only by gross misconduct.
When is summary dismissal legal in the UK?
Summary dismissal is only lawful where the conduct constitutes gross misconduct. The Employment Rights Act 1996, section 98, allows an employer to dismiss for conduct reasons, but the question a tribunal will ask is whether dismissal fell within the "range of reasonable responses" open to a reasonable employer.
This test has teeth. It does not ask whether the tribunal itself would have dismissed. It asks whether a reasonable employer, faced with the same facts, could reasonably have dismissed. That gives employers some latitude, but it also means the grounds must be genuine and defensible.
The bar for gross misconduct is higher than most employers assume. Conduct that makes working together difficult, or that reflects poorly on the employee, does not automatically clear it. The conduct must be so serious that it fundamentally destroys the trust and confidence the employer is entitled to place in the employee. Misjudging that threshold means the dismissal is unfair on substance alone, regardless of how carefully the process was followed.
What counts as gross misconduct and what doesn't?
Gross misconduct typically includes:
- Theft, fraud, or deliberate falsification of records
- Physical violence or serious threats against colleagues, customers, or managers
- Serious breach of confidentiality or data security
- Gross insubordination — a deliberate and serious refusal to follow a reasonable management instruction
- Being under the influence of alcohol or drugs where this creates a material risk
- Serious harassment or discrimination
What typically does not reach the threshold:
- Persistent lateness or unauthorised absence — these are conduct issues that require a formal process before dismissal becomes proportionate
- Underperformance — this is a capability matter, not gross misconduct
- A single heated argument with a colleague
- Minor dishonesty — padding an expense claim by a small amount may not meet the threshold, depending on the role and context
The line is always fact-specific. A forklift driver caught drinking on shift is in a different position to an office worker who has two glasses of wine at a client lunch. The role, the context, and the potential consequences all matter. Employment tribunals examine these factors closely, and employers who apply the gross misconduct label too freely quickly find themselves defending claims they assumed they would win.
The process you must follow even for gross misconduct
This is where most SMEs come unstuck. There is a widespread assumption that if the conduct is serious enough, the formalities can be skipped. They cannot.
The ACAS Code of Practice on Disciplinary and Grievance Procedures applies to summary dismissal just as it does to any other dismissal. Compliance with the Code is the benchmark against which tribunal judges measure employer behaviour, and failure to follow it can increase any award by up to 25%.
Before you summarily dismiss anyone, you must work through five steps:
1. Investigate.
Gather the facts. Interview witnesses, review CCTV or documents, secure any relevant evidence. The investigation does not need to be lengthy, but it must happen. Deciding to dismiss before it is complete, or without conducting one at all, is a process failure.
2. Notify the employee in writing.
Tell them the allegation, that a disciplinary hearing will take place, that a potential outcome is dismissal without notice, and that they have the right to be accompanied by a trade union representative or a colleague.
3. Hold the hearing.
Give the employee the opportunity to respond to the allegation before any decision is made. They may have information you do not. The decision is made after the hearing, not before it.
4. Communicate the outcome in writing.
Set out the decision, the reasons, and the effective date. If the outcome is summary dismissal, confirm that employment has ended immediately and without notice.
5. Offer the right of appeal.
Even where the outcome is dismissal, the employee must have the opportunity to challenge the decision internally before pursuing a tribunal claim.
During the investigation, you can suspend the employee on full pay. This is often appropriate where the alleged conduct creates a risk if the employee remains at work. Suspension is not a punishment, it should be positioned as a neutral act pending investigation.
The fact that the misconduct is obvious does not remove these obligations. An employee caught on camera stealing from the till still has the right to a hearing. Tribunals have upheld unfair dismissal claims, and awarded substantial compensation, in cases where the employer's decision was entirely correct on the facts but the process was not followed.
What a wrongly handled summary dismissal costs
The financial exposure from an unfair dismissal claim is not theoretical.
Unfair dismissal compensation has two components. The basic award is calculated on age, length of service, and weekly pay. The weekly pay cap stands at £751 (from April 2026), giving a maximum basic award of £22,530. The compensatory award covers actual financial loss, lost earnings, lost benefits, future loss, and is capped at £123,543 or 52 weeks' gross pay, whichever is lower (correct as of April 2026, and subject to annual review).
On top of that, where the employer has unreasonably failed to follow the ACAS Code, the tribunal can increase the total award by up to 25%. A claim worth £20,000 becomes a claim worth £25,000 before anything else is argued.
Then there are the costs of defending the claim: legal fees, management time, disclosure, witness preparation, and the hearing itself. Defending a tribunal claim costs £14,000–£24,000 , and that cost is the same whether you win or lose.
Total exposure on a dismissed employee at a mid-level salary: £40,000–£60,000 is a realistic number. For a senior employee or someone with long service, it can be considerably more.
Employment tribunal claims for unfair dismissal have risen sharply since fees were abolished in 2017. Looking further ahead, from January 2027 the qualifying period for unfair dismissal protection is due to fall from two years to six months under the Employment Rights Act 2025, which will significantly expand the pool of employees who can bring claims. An employer who summarily dismisses without following process is not taking a calculated risk. They are handing the claimant's representative a straightforward argument.
What the ACAS Code says about summary dismissal
The ACAS Code of Practice on Disciplinary and Grievance Procedures is the document employment tribunals reach for first. It is not legislation, it does not have the force of law, but under section 207A of the Trade Union and Labour Relations (Consolidation) Act 1992, employment tribunals must take it into account, and can adjust awards by up to 25% either way for unreasonable non-compliance.
The Code makes clear that the same principles of fairness apply regardless of how serious the alleged misconduct is. Investigation, notification, hearing, decision, appeal: these steps are not bureaucratic formalities. They are the structure that gives a dismissal decision its legal foundation.
"We had to act quickly" is the argument employers most commonly reach for when they have skipped the process. Tribunals reject it almost every time. Speed is not incompatible with fairness, an investigation can be conducted in a day, a hearing scheduled within 48 hours. What matters is that the steps were taken, not how long they took.
One further point the Code makes explicit: even where the employer is satisfied the employee is guilty, the right to be accompanied at the hearing is not optional. Denying a companion is itself a breach of the Code and, separately, a breach of the Employment Relations Act 1999, which gives the employee the right to claim up to two weeks' pay in addition to any other award.
Summary dismissal common questions answered
Can I summarily dismiss without a hearing?
Almost never. Even in cases where the evidence is overwhelming, the ACAS Code requires the employee to have the opportunity to respond before a decision is made. The only genuine exception is where holding a hearing is truly impossible, a bar that is extremely difficult to clear in practice. Skipping the hearing is the single most common process error employers make, and it remains the most expensive one.
Does the employee still get notice pay if summarily dismissed?
No. The defining feature of summary dismissal is that it is immediate, employment ends without notice and without payment in lieu. However, if the employer cannot demonstrate that the conduct amounted to gross misconduct, the employee may bring a wrongful dismissal claim for damages equivalent to their notice entitlement. Wrongful dismissal and unfair dismissal are separate causes of action and can run concurrently.
What's the difference between summary dismissal and unfair dismissal?
Summary dismissal describes the mechanism, how the dismissal is carried out: immediately, without notice. Unfair dismissal is a legal finding, a tribunal's conclusion about whether the dismissal was fair. A summary dismissal can be entirely fair (conduct was gross, process was followed) or unfair (conduct did not reach the threshold, or process was skipped, or both). The two concepts operate on different tracks, and both must be considered before pulling the trigger.
Can a probationer be summarily dismissed?
Employees without two years' continuous service generally cannot bring an unfair dismissal claim, with limited exceptions for automatically unfair reasons. But summary dismissal of a probationer can still give rise to a wrongful dismissal claim if the employment contract requires notice. More importantly, the Employment Rights Act 2025 is set to reduce the qualifying period for unfair dismissal protection from two years to six months in January 2027. Employers running on pre-2025 contracts and pre-2025 assumptions about probationary dismissals should not wait to find out whether their documentation holds up.
Is your employment documentation ready for a challenge?
If your disciplinary policies, employment contracts, or procedures have not been reviewed since the Employment Rights Act 2025 came into force, they may not give you the protection you think they do. The HR Doctor's Compliance Confidence Kit reviews your documentation against current law, identifies where the gaps are, and puts in place the framework that makes decisions like summary dismissal defensible.
Not sure where you stand? The free HR Health Check takes under a minute and lets you know which areas need attention first.
Want to see how this plays out in practice? Download the HR DR App to read our Christmas boiler case study a real example of what happens when the process isn't watertight.