Can You Get a Fit Note for Anxiety or Burnout in the UK? (2026 Guide)

Last updated: April 2026

Short answer: Yes. In the UK, you can get a fit note (sometimes called a sick note) for anxiety, stress, or burnout if a doctor determines that you are not fit for work.

A fit note can support:

• Employer sick leave
• Statutory Sick Pay (SSP)
• Benefits such as Universal Credit or ESA

If anxiety, stress, or burnout is affecting your ability to work, you are entitled to seek medical assessment and, where appropriate, take certified time off.

Mental health conditions are treated the same as physical illnesses under UK employment and health law.

How Common Is Mental Health-Related Sick Leave in the UK?

Anxiety, stress, and burnout are not fringe concerns, they are the dominant cause of workplace absence across the UK, and the figures are rising sharply.

• 964,000 workers suffered work-related stress, depression, or anxiety in 2024/25, a 24% increase year-on-year, according to HSE data.
• 22.1 million working days were lost to mental health-related conditions in 2024/25 alone.
• Mental ill health is now the leading cause of long-term absence (41% of cases) and the second most common cause of short-term absence (29% of cases), per CIPD research.
• Nearly 30% of employees report experiencing anxiety or depression in the past year; a further 25% report stress or burnout, according to Simplyhealth research published in 2026.
• One in five workers (20%) took time off sick due to poor mental health caused by stress in the year to November 2025, rising to two in five (39%) among workers aged 18–24, per Mental Health UK’s Burnout Report 2026.
• 91% of adults experienced high or extreme levels of pressure or stress in the past year, per the same report, the same proportion as the previous two years, signalling that the crisis is entrenched rather than peaking.

What Counts as a Valid Reason for a Sick Note?

Any condition—mental or physical—that makes you unfit for work can qualify. UK employment law draws no distinction between a broken leg and a clinical anxiety disorder; both are legitimate grounds for certified sick leave.

This includes:

• Generalised anxiety disorder (GAD)
• Panic disorder
• Work-related stress
• Clinical burnout (where it manifests as medically recognised symptoms — see below)
• Depression
• Post-traumatic stress disorder (PTSD)
• Mixed anxiety and depression (one of the most frequently recorded diagnoses on UK fit notes)

What matters most is functional impact, not the diagnostic label. A GP assesses whether your condition prevents you from:

• Concentrating or maintaining focus
• Making sound decisions
• Performing your duties safely
• Interacting appropriately with colleagues or clients

If the answer is yes to any of the above, a fit note is medically appropriate.

Burnout: Is It Recognised?

According to the World Health Organization, burnout is classified in ICD-11 as an occupational phenomenon, not a medical condition.

However, in the UK:

• If burnout leads to clinical symptoms (e.g. anxiety, exhaustion)
• And those symptoms impair your ability to work

You can still be signed off work.

Who Can Issue a Fit Note in the UK?

A fit note can be issued by:

• GP (family doctor)
• Hospital doctor
• Nurse, pharmacist, or physiotherapist (in some cases, if they are involved in your treatment and authorised to issue fit notes)

Fit notes are governed by guidance from the NHS.

They will state either:

• “Not fit for work”
• “May be fit for work” (with adjustments)

Read our full guide to fit notes in the UK.

What Happens at the GP Appointment?

Many people feel anxious about describing their mental health symptoms to a GP — particularly when those symptoms involve stress or burnout, which can feel subjective or difficult to articulate. Understanding what the GP is actually assessing can help.

Your doctor will assess:

• Symptoms: What you are experiencing — anxiety, panic attacks, exhaustion, low mood, sleep disruption, difficulty concentrating, irritability, emotional numbing.
• Duration: How long you have been experiencing these symptoms and whether there is any recent escalation.
• Functional impact on work: Whether and how your symptoms prevent you from carrying out your job safely and effectively.
• Treatment plan: Whether you are on medication, waiting for therapy, or need a referral. The GP will consider this as part of the duration recommendation

They are required to:

• Make a proper clinical assessment
• Keep records
• Issue notes only when medically justified

How Long Can You Be Signed Off for Anxiety or Burnout in the UK?

This depends on severity.

Typical patterns:

• Short-term: 1–2 weeks initially
• Extended leave: Requires review
• Long-term absence: May involve occupational health

Fit notes can be extended if needed.

Average sick leave duration for mental health conditions, based on 2025/26 UK data: employees taking sick leave for anxiety or depression took an average of 7.1 days per episode; those with stress or burnout took an average of 5.9 days. However, older workers (55+) experiencing anxiety or depression averaged 9.7 days per episode — underlining that absence duration is highly individual.

Can You Get Statutory Sick Pay (SSP) for Anxiety or Burnout in the UK?

Yes. You can receive Statutory Sick Pay (SSP) if you’re off work due to anxiety, stress, or burnout—provided you meet the eligibility criteria.

Mental health conditions are treated the same as physical illnesses for SSP purposes.

If your condition makes you unfit for work, SSP can be paid.

What matters is:

• How your symptoms affect your ability to do your job
• Not the label of the condition itself

Key SSP rules in the UK (following April 2026 changes):

• SSP is paid from the first day of sickness absence
• The minimum earnings threshold has been removed
• Payments are 80% of earnings or £123.25 per week (whichever is lower)
• Applies to short-term absences and phased returns
• Payable for up to 28 weeks
• Transitional rules may apply to ongoing sickness claims

For more details, see our full guide to SSP changes in the UK (2026).

Benefits if You Can’t Work Long-Term

If you don’t qualify for SSP or it runs out, you may be able to claim:

• Universal Credit
• New Style Employment and Support Allowance (ESA)

These require medical evidence (fit notes).

Employer Responsibilities in the UK

Employers in the UK have legal obligations towards employees who are absent due to mental health conditions. ACAS guidance states clearly that employers should treat mental ill health with the same level of seriousness and care as a physical health condition.

Key legal frameworks that apply:

• Health and Safety at Work Act 1974: Employers have a duty of care to manage workplace stress risks. Where work is a contributing factor to your anxiety or burnout, this duty is particularly relevant.
• Equality Act 2010: If your mental health condition qualifies as a disability (see below), your employer must provide reasonable adjustments. Failing to do so is unlawful discrimination.
• Employment Rights Act 1996 (and 2025 amendments): Governs fair treatment in sick leave processes and SSP entitlements.

They must:

• Manage workplace stress risks
• Support employee wellbeing

If your condition qualifies as a disability under the Equality Act 2010, they must provide reasonable adjustments.

Examples:

• Phased return
• Reduced hours
• Flexible working
• Adjusted duties

Employers may also refer employees to occupational health for independent assessment.

According to the official guidance by ACAS, if an employee is experiencing poor mental health, employers should treat it with the same level of seriousness and care as they would a physical health condition.

Is Anxiety a Disability in the UK?

Not always.

Under the Equality Act:

• It must be long-term (12+ months)
• Have a substantial impact on daily activities

Severe or chronic anxiety disorders, including generalised anxiety disorder (GAD), panic disorder, social anxiety disorder, and anxiety linked to PTSD, often meet this definition, particularly where they have persisted for a year or more and affect daily functioning.

Can You Be Dismissed While on Sick Leave for Anxiety?

Not simply for being off sick with a valid fit note. But they may dismiss on capability grounds if proper procedures are followed.

If absence is prolonged, employers may:

• Conduct capability assessments
• Request medical evidence
• Explore adjustments

They must follow fair procedures.

Unfair dismissal can be challenged through employment tribunals.

Being off sick for anxiety does not automatically put your job at risk—but long-term absence may lead to review, and employers must handle this fairly and lawfully.

When Could Dismissal Happen?

Dismissal may be considered if:

• You’re unable to return to work within a reasonable timeframe
• Medical evidence shows no likely improvement
• Adjustments are not feasible

Even then, the decision must be:

• Based on medical evidence
• Fair and proportionate
• Made after proper consultation

Can You Get a Sick Note Without Seeing a GP in Person?

Yes.

You can often get an online fit note via:

• Phone consultation
• Online GP services

But:

• A proper clinical assessment is still required

Explore our full guide on how to get an online fit note in the UK.

If Your Mental Health Sick Leave Isn’t Handled Fairly (UK)

If your employer isn’t handling your mental health absence properly, you can:

• Raise the issue internally first (HR or formal grievance)
• Get advice from ACAS or Citizens Advice
• Contact Equality Advisory and Support Service if discrimination may be involved under the Equality Act 2010
• Escalate to an employment tribunal if needed (after ACAS conciliation)

Tip: Keep records of fit notes and communication in case you need to take action.

Practical Steps If You’re Struggling

• Speak to your GP early
• Be honest about symptoms
• Check your employer’s sick policy
• Keep records of certificates
• Explore therapy or counselling
• Discuss phased return options

Common Myths (UK)

Myth: Burnout isn’t a valid reason Fact: If it affects your ability to work, it is valid

Myth: Mental health is treated differently Fact: UK law treats it equally to physical illness

Myth: Employers need your diagnosis Fact: They only need fitness status

Red Flags (When Issues May Arise)

• No proper medical assessment
• Repeated long absence with no treatment plan
• Incomplete or unclear fit notes

These may trigger:

• Employer queries
• Occupational health review

Returning to Work After Mental Health Leave (UK Guidance)

Returning to work after a period of mental health leave can feel overwhelming, but with the right support, it’s often a positive step.

Before going back, it’s a good idea to speak with your GP and discuss any concerns with your employer or occupational health. You may be able to agree on adjustments such as:

• Flexible hours
• Reduced workload
• Additional support during your transition

Under UK law, employers are required to make reasonable adjustments if your condition has a substantial and long-term impact on your ability to work. You may also be eligible for additional support through schemes like Access to Work.

If you’re not ready to return to your previous role, other options such as part-time work, volunteering, or support from Jobcentre Plus may help you ease back into employment.

Work, when supported properly, can improve mental wellbeing by providing structure, purpose, social connection, and financial stability.