Burnt out at work: how is it different from tiredness?

Feeling burnt out at work is more than being tired. The World Health Organization's classification, ICD-11, describes burnout as a syndrome that comes from chronic workplace stress that has not been effectively managed, and indexes it as an occupational phenomenon rather than a medical condition. It has three parts: feeling exhausted, growing mental distance or cynicism about your job, and feeling less effective at work. Plain tiredness is mainly the first of these, and it is not tied to work alone. Thai studies report very different figures, from about 11% to 73% of the workers surveyed, depending on the job and the cut-off used. A good first step is to talk to someone at work, such as your manager, and to see a doctor if you are struggling to cope or your mood has been low for more than 2 weeks.

If what you feel is mostly physical tiredness after long workdays, see Tired all day from work and mentally drained: what can I do?. For stress that builds up from all parts of life, see Stress keeps building up. How do I spot it and cope?

What does "burnt out at work" actually mean?

People use "burnt out" loosely for any bad week. Researchers and the WHO use it in a narrower way.

How the WHO classification describes it

The WHO has described burnout as a syndrome caused by chronic workplace stress that has not been effectively managed. A 2025 paper by De Beer and Schaufeli, work psychology researchers in Norway and the Netherlands, notes that ICD-11, the WHO's disease classification list, indexes burnout as an "occupational phenomenon" rather than a medical condition.

The three parts

Studies built on the ICD-11 description, such as a 2025 study of 1,024 employees by Kim and colleagues at Inha University in Korea, measure burnout across three dimensions.

In the Korean study, only 3.3% of the 1,024 employees met all three at once, which shows how strict the full definition is compared with everyday use of the word.

Mild complaints and more severe burnout

De Beer and Schaufeli distinguish mild work-related burnout complaints from more severe burnout, and argue that spotting the early signs matters because it can help people before things get heavier. The UK Health and Safety Executive points out that stress is not a weakness and can happen to anyone.

How is burnout different from ordinary tiredness?

The two overlap, which is why they are easy to confuse. The main difference is what comes with the exhaustion, and where it comes from.

Side by side

Three questions to ask yourself

These questions follow the three parts above. They are not a test and cannot tell you whether you are burnt out, but they help you describe what is going on when you talk to your manager or a doctor.

• Am I drained most workdays, not just after an unusually busy week?
• Have I started to feel distant from, or negative about, my work in a way that is new for me?
• Do I feel less able to do my job well than I used to?

If the answer is mostly "yes" to the first and "no" to the others, the tiredness article may fit better: Tired, drained and sleepy all day: what causes it?

How common is burnout among Thai workers?

Several Thai studies have measured burnout, mostly in health care, with one in industry.

What Thai studies found

Why the numbers differ so much

Each study used its own cut-off. Counting someone as burnt out when they score high on any one part, as the 2021 health care study did, gives a much larger figure than requiring several parts. The 2021 data were also collected during the global pandemic, among staff caring for people at that time. All four studies are surveys in which people rated themselves at one point in time, and most cover health care, so they say little about office work in Bangkok, for example. What they do show is that burnout is a common and measurable issue in Thai workplaces.

What parts of work are linked to burnout?

Because burnout is defined as coming from work, it helps to look at which parts of work are weighing on you.

Six areas of work life in the Thai industrial study

The study of 390 Thai industrial workers used a survey that compares what a person needs with what their job gives them in six areas. Burnout was linked to a mismatch in all six:

The same study also linked burnout to working more than 8 hours a day.

The UK view of work-related stress

The UK Health and Safety Executive (HSE) lists six main areas of work that can lead to work-related stress: demands (not being able to cope with the demands of the job), control (not being able to control how you do your work), support (not getting enough information and support), relationships (trouble with relationships at work, or bullying), role (not fully understanding your role and responsibilities) and change (not being engaged when the business goes through change). They overlap closely with the six areas above.

Hours and days off

The 2021 Thai health care study found burnout more likely among staff who looked after more than 20 people per shift, worked more than 6 extra shifts a month, or had 1 rest day or fewer a week. These are associations from one survey, not proof of cause, but they point to the same thing: sustained load without enough recovery time.

What can I do day to day if I feel burnt out?

Burnout comes from the fit between you and your work, so the steps involve both your workplace and your own routine.

Talk to someone at work

The HSE advises that if you are feeling signs of stress at work, it is important to talk to someone, for example your manager. If talking to your manager is difficult, it suggests a trade union representative, HR, an employee assistance programme or your doctor. In the UK, employers have a legal duty to assess the risks to health from stress at work. Using the six areas above, note which ones weigh on you most so the conversation is specific: too many tasks, unclear priorities, no say in deadlines, or effort that goes unnoticed.

Protect sleep and days off

As general advice for all adults, the US CDC recommends 7 or more hours of sleep a night for adults aged 18 to 60, and suggests going to bed and getting up at the same time every day, turning off devices at least 30 minutes before bed, and avoiding large meals and alcohol before bedtime. Another idea, separate from the CDC advice, is to keep some days off free of work messages.

Look after yourself in ways that do not add to the load

The NHS suggests talking to people you trust, exercise and breathing exercises, managing your time and planning ahead, and not trying to do everything at once. It advises against using alcohol, cigarettes, gambling or drugs to cope.

When is it worth talking to a doctor?

Alongside changes at work and in your routine, a doctor is someone you can talk to. They can look at your sleep, mood and general health together.

Book an appointment if

The NHS advises seeing a doctor if:

• you are struggling to cope with stress
• the things you are trying yourself are not helping
• you have had a low mood for more than 2 weeks (from the NHS page on low mood)

Get help straight away

If you have thoughts of harming yourself, or feel you cannot keep yourself safe, get help now. In Thailand, the 1323 mental health hotline is free to call 24 hours a day, or go to the nearest hospital emergency department.

Before your appointment, note down

• when you started feeling this way and what was happening at work
• which of the three parts above you notice in yourself
• your usual working hours, days off and sleep times
• whether you are drinking more coffee or alcohol, or smoking more
• any medicines you take regularly