Stress at Work Compensation Claims
Work-related stress is a major cause of mental health problems in the UK workforce. The HSE’s Labour Force Survey consistently shows that hundreds of thousands of UK workers each year suffer from depression, anxiety, or other stress-related conditions caused or worsened by work. Where the workplace stress reaches the level of a recognised psychiatric injury (rather than just unhappiness or pressure), and the employer knew or should have known about the risk but failed to address it, UK law allows a compensation claim.
In this guide
- The Legal Test — Hatton v Sutherland
- When Is Psychiatric Injury “Foreseeable”?
- What Counts as a Recognised Psychiatric Injury?
- Common Workplace Stress Scenarios
- What Employers Must Do
- What Compensation Could You Receive?
- Why Stress Claims Are Hard to Win
- Time Limits
- Evidence That Strengthens a Stress Claim
- No Win No Fee Workplace Stress Claims
- Common Questions About Workplace Stress Claims
- Related Guides
- Our Partner's Fees Explained
- Check If You Could Claim Compensation For Your Injury
Stress at work claims are legally complex — the bar is high and the law has been shaped by specific Court of Appeal decisions. This guide explains the test that successful claims must meet, what counts as a recognised psychiatric injury, and how to start a claim on a no win no fee basis.
The Legal Test — Hatton v Sutherland
The leading UK case on workplace stress claims is Hatton v Sutherland (2002), which set out 16 propositions that have governed these cases ever since. The core requirements:
- Recognised psychiatric injury — the claimant must have suffered a recognised psychiatric injury (depression, anxiety disorder, PTSD, adjustment disorder), not just unhappiness or stress
- Caused by the workplace — the psychiatric injury must have been caused or materially contributed to by workplace stress
- Foreseeability — the harm to the specific claimant must have been reasonably foreseeable to the employer
- Breach of duty — the employer must have failed to take reasonable steps to address the foreseeable risk
- Causation — the breach of duty must have caused or materially contributed to the harm
The Hatton test makes successful stress claims harder than typical workplace physical injury claims. The hardest element is usually foreseeability — the employer must have known (or reasonably should have known) that this specific claimant was at risk.
When Is Psychiatric Injury “Foreseeable”?
The employer’s duty is to address harm that is reasonably foreseeable. Stress-related harm typically becomes foreseeable when:
- The employee tells the employer they are struggling
- The employee provides medical evidence of stress-related illness
- The employee takes time off work for stress-related reasons
- There is clear evidence of overwork — extended hours, missed leave, complaints about workload
- The employee has a history of stress-related absence
- The employee is in a known high-stress role and shows warning signs
- A colleague in the same role has previously suffered breakdown
Once foreseeability is established, the employer’s duty to take action begins. The duty does not require the employer to anticipate stress in workers who appear fine — it requires action when warning signs emerge.
What Counts as a Recognised Psychiatric Injury?
For a successful claim, the claimant must have a recognised psychiatric diagnosis from a psychiatrist or clinical psychologist using ICD-11 or DSM-5 criteria. The main diagnoses:
- Major Depressive Disorder — clinical depression with significant impact on function
- Generalised Anxiety Disorder — chronic excessive anxiety
- Adjustment Disorder — emotional response to identifiable stressor, sometimes valued lower than full depression
- Post-Traumatic Stress Disorder — for traumatic workplace experiences (assault, accidents witnessed, abuse). See our PTSD compensation amounts guide
- Mixed Anxiety and Depressive Disorder — combined symptoms
- Burnout / Occupational Exhaustion Syndrome — now recognised in ICD-11
A GP’s mention of “stress” or “low mood” is not sufficient — formal psychiatric or psychological assessment using diagnostic criteria is essential.
Common Workplace Stress Scenarios
Excessive Workload
The most common stress claim category. Cases typically involve:
- Sustained overtime without compensation or rest
- Workloads exceeding what could reasonably be expected to be completed
- Inadequate staffing levels
- Unrealistic deadlines
- Lack of support or training for the workload demanded
Bullying and Harassment
Workplace bullying causing psychiatric injury is a major category. See our bullying at work compensation claims guide for the specific framework.
Lack of Support After Trauma
Particularly relevant for emergency services, healthcare workers, social workers, and others exposed to traumatic events. Where the employer fails to provide adequate psychological support after exposure to trauma, claims can succeed.
Inadequate Sickness Management
Where the employer mishandles a return to work after a stress-related absence — for example, requiring immediate full duties when phased return was needed — claims can succeed for the worsening of the condition.
Specific High-Risk Roles
Some roles have heightened scrutiny because of inherent stress:
- Teachers — particularly those handling disturbed pupils or excessive marking
- NHS workers — particularly during peak winter and pandemic pressure periods
- Social workers and child protection
- Police and emergency services
- Junior doctors
- Care workers
What Employers Must Do
UK employers owe a duty under the Health and Safety at Work etc Act 1974 and the wider regulatory framework to address foreseeable psychiatric risk. Specific obligations include:
- Conducting stress risk assessments under the Management of Health and Safety at Work Regulations 1999
- Implementing the HSE Stress Management Standards (Demands, Control, Support, Relationships, Role, Change)
- Providing reasonable workloads and adequate staffing
- Responding promptly to disclosed stress concerns
- Offering occupational health referrals where appropriate
- Providing reasonable adjustments under the Equality Act 2010 where the stress is linked to a recognised disability
- Maintaining appropriate management practices around bullying, discrimination, and reasonable management instructions
What Compensation Could You Receive?
Workplace stress compensation depends on the severity and duration of the psychiatric injury. Typical ranges using the JC psychiatric injury brackets:
- Less severe (full recovery within 1-2 years, modest impact) — typically £1,880 to £7,150
- Moderate (some ongoing symptoms, partial work capacity, treatment helps) — typically £7,150 to £23,270
- Moderately severe (significant problems for foreseeable future, partial work capacity, treatment helps but does not resolve) — typically £23,270 to £67,015
- Severe (permanent inability to work at pre-illness level, marked impact on relationships and life) — typically £67,015 to £141,240
Special damages typically include lost earnings (often substantial for cases preventing return to previous career), psychological treatment costs (CBT, psychiatric care), and any retraining costs.
Why Stress Claims Are Hard to Win
Despite the prevalence of workplace stress, successful claims remain difficult. Common reasons cases fail:
- No recognised psychiatric injury — the claimant has stress symptoms but no formal diagnosis
- Lack of foreseeability — the claimant did not warn the employer or seek help before breakdown
- Reasonable employer response — the employer offered support but the claimant did not engage or did not improve
- Multifactorial causation — non-workplace stressors (family, finances, health) contributed substantially
- Pre-existing condition — the psychiatric vulnerability predated employment
These hurdles mean that around 60-70 per cent of workplace stress cases fail at the foreseeability or breach-of-duty stage. Specialist solicitors triage cases carefully before taking them on.
Time Limits
You generally have three years from the date you knew (or reasonably should have known) you had suffered psychiatric injury caused by workplace stress. For continuing stress that built up over years, the date of knowledge is often when the claimant first sought medical help and was diagnosed. See our time limits guide for the full rules.
Evidence That Strengthens a Stress Claim
- GP records documenting symptoms, timing, and treatment
- Independent psychiatric assessment with formal diagnosis
- Emails, letters, or other documents showing complaints to the employer
- Records of any HR meetings, grievances, or occupational health referrals
- Time records showing excessive hours or workload
- Witness statements from colleagues
- The employer’s stress risk assessment (or proof none existed)
- Records of any stress management training provided (or its absence)
- A chronological note of what was happening at work and what was reported
Contemporaneous evidence is decisive. Stress claims where the worker raised concerns in writing, attended occupational health, or took specific recorded absences are substantially stronger than those where the symptoms developed silently.
No Win No Fee Workplace Stress Claims
Workplace stress claims can be run on a no win no fee Conditional Fee Agreement. The success fee is capped under LASPO 2012 at 25 per cent of general damages and past losses (future losses excluded). After-the-Event insurance protects against adverse costs. The ATE premium is normally payable only if you win, deducted from your compensation — it is no longer recoverable from the defendant — and your solicitor must explain how the premium and disbursements are treated before you sign (see how ATE insurance works). Because stress claims have a higher failure rate than other workplace injury claims, specialist solicitors typically assess prospects carefully before accepting cases — the initial consultation should give you an honest view of whether the case meets the Hatton test. See our how no win no fee works guide.
Common Questions About Workplace Stress Claims
My job is stressful and I have anxiety. Is that a claim?
Not automatically. Successful claims require: (a) formal diagnosis of a recognised psychiatric injury, (b) foreseeability — the employer knew or should have known about the risk, (c) breach of duty by the employer in not taking reasonable preventive steps, and (d) causation. Where you simply have a stressful job that has not caused diagnosable psychiatric illness, no claim arises. Where the stress has caused diagnosed depression or anxiety and the employer ignored warning signs, the claim can succeed.
I have not formally complained but my employer must have seen I was struggling. Is that enough?
Possibly, but the case is harder. UK courts require evidence of foreseeability — and silent suffering rarely produces clear foreseeability. Where there are visible warning signs (multiple sick days, deterioration in appearance or performance, requests for less work) the case may still succeed. Where the worker hid the stress entirely, claims often fail at the foreseeability stage. Acting earlier — letting your employer know in writing — protects future legal options.
I have not had a formal psychiatric diagnosis. Can I still claim?
No. UK law requires a recognised psychiatric injury — meaning diagnosis under ICD-11 or DSM-5 by a psychiatrist or clinical psychologist. GP mention of “stress” is not sufficient. As a first step, specialist solicitors typically arrange independent psychiatric assessment to confirm the diagnosis and prognosis. NHS waiting lists for psychiatric assessment can be long, but medico-legal assessment can be quicker.
My employer gave me a written warning that triggered my breakdown. Is that a claim?
Not usually. UK law specifically allows employers to enforce reasonable management instructions, including disciplinary action, without being liable for resulting psychiatric injury. The case succeeds only where the management action itself was unreasonable, where there were prior warnings of stress vulnerability, or where the action was discriminatory under the Equality Act 2010. A specialist solicitor will assess the specific position.
Will my employer fire me if I claim?
No — dismissing an employee for making a personal injury claim is automatically unfair dismissal under UK employment law. In practice, many stress claimants are no longer working for the relevant employer by the time the claim concludes (the breakdown often makes return impossible) — and the lost earnings from being unable to return form a major part of the compensation.
How long does a workplace stress claim take?
Stress claims typically take 18 months to 3 years. The longer timescale reflects the time needed for psychiatric assessment, the complexity of the Hatton test, and the typical employer’s defence of the claim. For cases where the psychiatric position is still developing, settlement may be deferred until the prognosis is clearer. See our how long does a claim take guide.
Related Guides
Accident at Work Claims — UK Employer Compensation
Bullying at Work Compensation Claims
Can I Sue My Employer? UK Worker Rights
Personal Injury Claims by Industry — Worker Guides
Personal Injury Time Limits Explained
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