Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
Every employer will, at some point, face a situation where an employee's behaviour falls short of what the business expects. How you respond matters enormously. Get it right and the issue is resolved fairly, with the working relationship either repaired or ended cleanly.
Get it wrong and you could be defending a tribunal claim that costs far more than the original problem ever did. This page walks through what misconduct and gross misconduct actually mean under UK employment law, the kinds of behaviours that typically fall into each category, and the sort of disciplinary process employers are expected to follow.
It is written for business owners, HR managers, and directors in England and Wales who want a plain-English grounding before putting a policy in place or dealing with a live issue.
Overview
Misconduct is a broad label for workplace behaviour that breaks the rules set out in an employee's contract or in the employer's policies. It covers things like persistent lateness, unauthorised absence, refusing reasonable instructions, minor breaches of company procedures, or careless behaviour that falls short of what the job requires.
Most instances of misconduct are dealt with through warnings and improvement plans rather than dismissal. Gross misconduct sits at the far more serious end of the scale. It describes behaviour so damaging that it fundamentally breaks the trust between employer and employee, making it unreasonable to expect the working relationship to continue.
Typical examples include theft, fraud, physical violence, serious bullying or harassment, significant breaches of health and safety, wilful damage to company property, and being under the influence of drugs or alcohol at work. Where gross misconduct is established after a fair process, dismissal without notice (summary dismissal) may be justified.
The key word is 'fair': the label alone does not protect an employer from a tribunal claim if the process was rushed, biased, or lacked proper investigation.
Key steps
Investigate before you act. Once a concern is raised, gather the facts calmly and without jumping to conclusions. Interview witnesses, collect any relevant documents or records, and keep written notes of what you find. A proper investigation is the foundation of a fair process and often exposes issues that change how the matter should be handled.
Put the allegations in writing. Send the employee a letter setting out the specific concerns, the evidence gathered so far, the possible outcomes (including whether dismissal is on the table), and the date and time of the disciplinary hearing. Give enough notice for them to prepare, and remind them of their right to be accompanied by a colleague or trade union representative.
Hold a fair hearing. At the hearing, go through each allegation, present the evidence, and let the employee respond fully. Ask questions, listen properly, and avoid treating the meeting as a formality. The person chairing should ideally not have been involved in the investigation, so the decision feels genuinely impartial.
Decide and communicate the outcome. Take time after the hearing to weigh the evidence before reaching a decision. Outcomes can range from no further action, through verbal or written warnings, to dismissal in serious cases. Confirm the decision in writing, explain the reasoning, and make clear what happens next, including any warning period.
Offer a right of appeal. The employee must be given a genuine chance to appeal the decision. Ideally the appeal is heard by someone more senior who has not been involved so far. Treat the appeal as a real review, not a rubber stamp, and be willing to change the outcome if new information or a procedural flaw comes to light.
Q What is the difference between misconduct and gross misconduct?
Misconduct covers breaches of workplace rules that are typically dealt with through warnings and improvement, such as lateness, poor attendance, or minor policy breaches. Gross misconduct is far more serious behaviour, for example theft, violence, or major safety breaches, that destroys the trust between employer and employee. Gross misconduct can justify dismissal without notice, but only where a fair process has been followed.
Q Can an employee be dismissed on the spot for gross misconduct?
No, not in the literal sense. Even where behaviour looks like obvious gross misconduct, the employer should suspend the employee on full pay while a proper investigation takes place, then hold a disciplinary hearing before reaching a decision. Skipping these steps, even when the evidence seems strong, is one of the most common reasons tribunals find a dismissal unfair.
Q Does the ACAS Code of Practice have legal weight?
Yes. The ACAS Code of Practice on Disciplinary and Grievance Procedures is taken into account by employment tribunals when deciding whether an employer acted reasonably. Unreasonable failure to follow it can lead to tribunal awards being increased by up to 25 per cent. Employers are not legally forced to follow every line, but significant departures need to be justified.
Q How long should a disciplinary investigation take?
There is no fixed timescale in law, but the process should be as prompt as is reasonably possible while still being thorough. Simple matters may be resolved in a week or two, while complex allegations involving multiple witnesses can take longer. Delays should be explained to the employee in writing, and suspensions should be kept as short as the circumstances allow.
Q Can an employee claim unfair dismissal after being sacked for gross misconduct?
Yes, if they have the qualifying period of continuous service, usually two years, they can bring an unfair dismissal claim. The tribunal will look at whether the employer had a genuine belief in the misconduct, held that belief on reasonable grounds, carried out a reasonable investigation, and followed a fair procedure. Dismissal can be unfair even if the underlying conduct did happen.
Q Do small businesses need a written disciplinary policy?
There is no legal requirement to have a detailed standalone policy, but every employer must give employees a written statement that explains any disciplinary rules and the procedure for dealing with them. In practice, having a clear written policy is strongly advisable for businesses of any size. It sets expectations, reduces disputes, and gives managers a framework to fall back on when issues arise.
Q Should an employee be suspended during the investigation?
Suspension should not be automatic. It is usually only appropriate where there is a genuine risk to the investigation, other staff, customers, or the business if the employee remains at work. Where suspension is used, it should be on full pay, kept as short as possible, and confirmed in writing with the reasons. Overusing suspension can itself lead to claims.
Disciplinary decisions feel straightforward until you are actually in the middle of one, and small missteps in the process can turn into costly tribunal claims later. An experienced legal adviser can talk through the situation with you on the phone and help you think through your options based on what you describe.
✓Plain-English answers to your specific questions about the situation
✓Practical perspective on the disciplinary process based on what you describe
✓A clearer sense of what to watch out for in your circumstances
✓Guidance tailored to what you describe about the employee and allegations
Personal call · For information only · Independent advisers
Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.
