Burnout Statistics UK: 2026 Facts, Data & Key Insights

Burnout has become one of the defining occupational health challenges in the United Kingdom. What was once dismissed as a buzzword is now recognised by the World Health Organisation as a legitimate occupational phenomenon resulting from chronic, unmanaged workplace stress — and the UK data shows it has reached endemic proportions. This guide brings together the latest findings from Mental Health UK's Burnout Reports, Deloitte, CIPD, and sector-specific research to provide the most comprehensive UK burnout statistics reference available.

Key Facts

91% of UK adults experienced high or extreme levels of pressure or stress in the past year (Mental Health UK, Burnout Report 2026) — the same rate as in each of the two previous years
63% of UK employees show at least one characteristic of burnout — exhaustion, mental distance from their job, or declining performance (Deloitte, 2024) — up from 51% in 2021
1 in 5 workers (21%) needed to take time off work due to poor mental health caused by pressure or stress in the past year
39% of 18 to 24 year olds had to take time off due to poor mental health — more than twice the rate of older workers
96% of 25 to 34 year olds experienced high or extreme stress in the past year — the highest rate of any age group
35% of workers said they did not feel comfortable discussing high stress levels with a manager — an increase of 3% on the previous year
Only 1 in 4 workers feels mental health is genuinely prioritised and supported in their workplace
The average sickness absence rate is now 9.4 days per employee per year — the highest figure in over 15 years (CIPD, 2025)
Mental ill health is now the leading cause of long-term workplace absence, accounting for 41% of cases (CIPD, 2025)
22.1 million working days were lost to work-related stress, depression and anxiety in 2024/25 (HSE)
59% of UK adults report that poor sleep has driven their stress this year
Only 32% of workplaces have formal plans in place to identify signs of chronic stress and prevent burnout

What Is Burnout and How Is It Measured?

The World Health Organisation classifies burnout as an occupational phenomenon in ICD-11, defining it as "a syndrome conceptualised as resulting from chronic workplace stress that has not been successfully managed." It is characterised by three dimensions: feelings of energy depletion or exhaustion; increased mental distance from one's job, or feelings of negativism or cynicism related to one's job; and reduced professional efficacy.

Mental Health UK's annual Burnout Reports — conducted by YouGov with nationally representative samples of UK adults — have tracked burnout risk since 2023. The most recent Burnout Report 2026 surveyed 4,502 adults, of which 2,591 were workers, with fieldwork carried out in November 2025. It found that the rate of 91% experiencing high or extreme stress has held constant across three consecutive years — a finding that in itself speaks to the entrenched nature of the problem.

Deloitte measures burnout using a different lens, asking employees whether they exhibit any of three key characteristics: exhaustion, disengagement, or reduced performance. Its 2024 research found that 63% of UK employees exhibit at least one of these — up from 51% in 2021. The three-year increase of 12 percentage points suggests that despite growing employer awareness, the underlying conditions driving burnout have intensified.

Who Is Most Affected?

Burnout does not affect the UK workforce uniformly. The Mental Health UK data reveals a clear generational pattern that has shifted in the most recent report.

Adults aged 25 to 34 are now the age group most likely to experience high or extreme stress, with 96% reporting this in the past year — overtaking the 18 to 24 group for the first time. This shift likely reflects the compounding pressures of early career financial strain, housing costs, relationship and family formation, and career expectations converging in a single life stage.

Young workers aged 18 to 24 continue to face acute stress: 93% experienced high or extreme stress in the past year, and nearly 2 in 5 (39%) had to take time off due to poor mental health — significantly above the overall worker average of 21%. Among this age group, comfort in discussing stress with a manager fell sharply, from 75% in 2024 to 56% in 2025 — a 19 percentage point drop that suggests a breakdown in trust between younger workers and their employers on mental health issues.

At the sector level, burnout rates are highest in healthcare (NHS staff mental health guide), education (teacher mental health guide), and construction.

The Burnout–Silence Paradox

One of the most persistent and problematic features of the UK burnout landscape is the gap between its prevalence and willingness to discuss it. Despite 91% of adults experiencing high or extreme stress, over a third (35%) said they did not feel comfortable discussing this with a manager in the Burnout Report 2026 — up 3 percentage points from the previous year.

This means the problem is getting worse, awareness is growing, but openness is actually declining. The Burnout Report 2026 also found that nearly 1 in 5 workers (19%) chose not to disclose high levels of stress, instead presenting at work as if nothing was wrong. This presenteeism — working while unwell — contributes to the cycle: workers who cannot discuss burnout cannot access support, their performance degrades, and the gap between professional self-presentation and internal experience widens.

Only 32% of workplaces currently have formal plans to identify signs of chronic stress and prevent burnout — meaning that in the majority of UK organisations, burnout prevention remains entirely ad hoc.

Burnout and Physical Health

The physical health consequences of sustained burnout are substantial and often underestimated. Mental Health UK data from the Burnout Report 2026 found that:

59% of UK adults agreed that poor sleep had driven their stress this year
64% of people said high stress would affect their sleep
45% said it would affect their diet
40% said it would affect their relationships with friends and family
34% said it would affect their relationship with a partner

The relationship between burnout and loneliness is also well established. Social withdrawal and disconnection are both causes and symptoms of chronic stress — a pattern that is particularly pronounced in remote and hybrid working environments, where informal social contact has diminished.

Burnout and the Wider Workplace Mental Health Picture

Burnout sits within — and significantly drives — the broader workplace mental health crisis in the UK. HSE data for 2024/25 shows that 964,000 workers suffered from work-related stress, depression or anxiety — a 24% increase on the previous year. Burnout is both a cause and an amplifier of this trend: workers experiencing burnout are more likely to develop clinical anxiety and depression, creating a progression from occupational phenomenon to diagnosable mental health condition.

The economic consequences are profound. Work-related mental health issues cost the UK economy £57.4 billion a year (MHFA England). For every £1 invested in mental health support in the workplace, Deloitte found an average return of £5.30 through reduced absenteeism, presenteeism, and staff turnover. The business case for early intervention is as clear as the human one.

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This guide was produced by the team at Mental Health First Aid Course, drawing on Mental Health UK's Burnout Reports, Deloitte's workplace mental health research, and CIPD's Health and Wellbeing at Work survey.