Can I be sacked for being off sick?
When an employer can lawfully dismiss someone who is ill, the process it should follow, how disability law protects you, and the deadlines if it goes wrong.
The short answer. Yes, an employer can dismiss someone who is off sick, but it should be a last resort after looking at support, giving reasonable time to recover and consulting you. Dismissal because of a disability may be unlawful discrimination. To claim ordinary unfair dismissal you normally need 2 years' service, due to fall to 6 months for dismissals from 1 January 2027.
When dismissal for sickness can be fair
Being off sick does not make you impossible to dismiss, and it does not make a dismissal automatically unfair. GOV.UK says you can be dismissed if a persistent or long-term illness makes it impossible for you to do your job. The question is usually whether the employer acted reasonably in getting there. For the earlier stages of an absence, see the full sick leave guide.
Employers often call this a capability process. Acas says an employer should take steps to avoid dismissing on capability grounds, looking at support such as changes to your role or a phased return to work. GOV.UK says an employee off for more than 4 weeks may be considered long-term sick.
What a fair process usually involves
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Look at what would help you return
Before dismissal, GOV.UK says the employer should consider whether you could come back, for example with flexible or part-time hours or different work.
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Give you reasonable time to recover
The employer should look for ways to support you and allow a reasonable time for you to get better.
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Consult you
You should be consulted, not simply told what will happen. That means talking with you about your health and the options before any decision.
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Consider reasonable adjustments
If you are disabled, adjustments are a legal duty, not a favour. GOV.UK gives a phased return with flexible or part-time hours as an example.
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Dismissal only as a last resort
If none of that makes a return possible, a fair dismissal on grounds of capability can still happen.
If your illness is a disability
Many people do not realise their condition may count. Under the Equality Act 2010 you are disabled if you have a physical or mental impairment with a substantial and long-term adverse effect on your ability to carry out normal day-to-day activities. Substantial means more than minor or trivial. Long-term means it has lasted, or is likely to last, at least 12 months, or the rest of your life. Cancer, HIV and multiple sclerosis count from the day of diagnosis.
If you meet that test, three things follow:
- Dismissing you because of your disability may be unlawful discrimination
- Your employer must make reasonable adjustments so you are not put at a substantial disadvantage, which can include a phased return with flexible or part-time hours
- Acas says an adjustment could be not counting some or all disability-related absence towards trigger points, or recording it separately
This protection does not depend on how long you have worked there.
Depression, stress and other mental health absence
Acas says employers must treat mental and physical health as equally important. Whether a particular condition meets the disability test depends on its effect on you and how long it has lasted or is likely to last, so it is decided case by case. If you are off with depression or stress, the same fair process applies as for any other illness, and disability protection adds to it where the test is met.
Can a teacher be sacked for being off sick?
The rules on this page are general employment law, so they apply to teachers as they do to other employees. Your school's or trust's sickness and capability policy will set out the meetings and stages it follows, and is worth reading early.
Made redundant while on sick leave
Redundancy is a different reason for dismissal from sickness, and it can happen while you are off. Acas says employers should keep employees who are off sick up to date during the process. Missing something important could be discrimination if your absence relates to a disability or pregnancy.
On selection, be precise about what the rules say. You cannot be selected because you are disabled. Attendance record can be used as a selection criterion, but Acas says it must be accurate and must not include absences related to disability, pregnancy or maternity. So sickness absence can count against you in a redundancy scoring, but not every kind.
Unfair dismissal: who can claim and the deadline
On 27 October 2026, you normally need 2 years' continuous service to claim unfair dismissal (1 year in Northern Ireland). The Employment Rights Act 2025 cuts this to 6 months, scheduled for dismissals from 1 January 2027, and removes the cap on compensatory awards. That change was not yet in force when this page was checked.
If you think you were unfairly dismissed, you can take your case to an employment tribunal. Since 1 October 2026, the usual time limit for an unfair dismissal claim is 6 months from dismissal. Dismissals before that date may still fall under the old 3-month limit. Do not wait to see what happens.
Get advice on your own situation. This page covers England, Scotland and Wales. The Equality Act 2010 does not apply in Northern Ireland, and the unfair dismissal qualifying period is different there. It is general information, not legal advice on your case. If you are facing a capability or dismissal process, or think a decision was unfair, contact Acas or a qualified employment adviser as early as you can.
What you can do now
- Keep your employer updated in the way you agreed, and keep copies
- Keep your sickness evidence in order. If your GP is hard to reach, a private sick note from a UK doctor is evidence your employer can choose to accept
- Ask what support or adjustments might help you return, and put suggestions in writing
- Go to any meetings, or ask for a different time or format if your health makes it difficult
- Note the date of any dismissal: the tribunal clock starts then
Common questions
Can I be sacked for being off sick with depression?
Depression can be a disability under the Equality Act 2010 if it has a substantial, long-term effect on your day-to-day life, meaning at least 12 months or likely to last that long. If it is, dismissing you because of it may be unlawful discrimination and your employer must consider reasonable adjustments. Acas says mental and physical health must be treated as equally important.
Can you be sacked while off sick with stress?
Stress-related absence is treated like any other sickness. Your employer must follow a fair process before considering dismissal. If your condition meets the legal definition of disability, discrimination protection and the duty to make adjustments also apply.
Can you be made redundant while on sick leave?
Yes, redundancy can happen while you are off sick, but your employer should keep you updated during the process. You cannot be selected because you are disabled. Acas says attendance can be a selection criterion only if the record is accurate and leaves out absences related to disability, pregnancy or maternity.
Can I be fired while on sick leave in the UK?
Yes, but your employer should follow a fair process. With 2 years' service or more you can normally claim unfair dismissal if it did not. For dismissals from 1 January 2027, the qualifying period is scheduled to fall to 6 months.
Can a teacher be sacked for being off sick?
The same employment law applies to teachers as to other employees. Your school's or trust's sickness and capability policy sets out the steps it follows.
How long do I have to make a tribunal claim?
For most unfair dismissal claims, 6 months from the date of dismissal, since 1 October 2026. Dismissals before that date may still have the old 3-month limit, so get advice quickly.
Related
Sources. The legal, pay and clinical facts on this page were checked against these primary sources on 27 October 2026. Rules and rates change, and your employer’s own policy may add to them, so check your contract or HR policy too.
Need a note for your absence?
A GMC-registered UK doctor can assess you online and, if clinically appropriate, issue a private sick note your employer can choose to accept.
Request a sick noteAssessed by a GMC-registered UK doctor. Full refund if a note cannot be issued on clinical grounds.