How to prevent burnout

Hours are not burnout. Hours are the part of the workload you can see, and you can count them the same way every week. Exhaustion, distance and doubt are much harder to judge from the inside.

Counting matters because guessing does not work well. Robinson and colleagues (2011), writing in a journal of the US Bureau of Labor Statistics, compared the hours people said they worked with the hours in their time diaries, written records of what they did through each day. Estimates came to over 39 hours a week, the diaries to about 36.

That is an overestimate of 5% to 12%. The authors sum up the pattern as “the greater the estimate, the greater the overestimate”, and it was strongest in people who said they worked 50 hours or more. Other researchers have argued that the gap is a statistical effect rather than real misjudging, and the paper reports that view, though its authors argue against it. Either way, a guess is not a count.

Long hours also eat into the time you need to recover. Researchers call one part of recovery detachment: not doing or thinking about work in your free time. A meta-analysis, which pools the results of many earlier studies, brought together 91 samples and 38,124 employees to look at it (Wendsche and Lohmann-Haislah, 2017).

People who detached more reported less exhaustion, a correlation of 0.36 (on a scale from zero, meaning no link, to one, a perfect link). Longer working time went with less detachment (0.17), and heavier workloads even more so (0.28). The psychologist Sabine Sonnentag calls this the recovery paradox: the research finds that recovery suffers exactly when the pressure at work is high, which is when people need it most (Sonnentag, 2018).

The WHO and the International Labour Organization set long working hours at 55 or more a week, against a standard week of 35 to 40 hours. In 2016, 488 million people worked that long, or 8.9% of the global population (Pega and colleagues, 2021).

The joint study behind those numbers looked at heart disease and stroke, not burnout. It is here because it explains where the long-hours line on the counter below comes from. In its news release on the study, the WHO suggests that employees could share working hours so that hours do not climb to 55 or more a week (the WHO and the ILO).

“Push through now and rest later.”

The hours past the bend in the curve buy little: in Pencavel’s data, 70 hours produced about what 56 did. The rest you save up for fades fast, too. A meta-analysis that pooled vacation studies found a small lift in health and well-being after a vacation, an effect size (a standard measure of how big a change is) of 0.43 (de Bloom and colleagues, 2009).

The same analysis found the effect faded soon after people went back to work. Rest has to come every week, not once a year.

“Burnout is a label you can give yourself.”

The WHO does not classify burnout as a medical condition. Exhaustion, low mood and poor sleep can have causes that have nothing to do with work. A count of hours cannot tell you which of these you have, but it can tell you whether your workload has changed. For anything beyond that, see the section on talking to someone below.

1. Set an end to the workday, and write it down. A time you can check against turns a feeling into a yes or no each evening.
2. Take work email off your phone in the evening. A diary study followed 70 employees over 4 workdays, asking them each day about their phone and how they felt (Derks, van Mierlo and Schmitz, 2014). More work smartphone use after hours went with less detachment, and less detachment went with more exhaustion.
3. Keep one day with no work at all. Not a lighter day, but a day with no work in it. That is the day of rest whose value the munitions data could measure.
4. Plan next week from last week’s real hours. When people guess how long work will take, they picture their plan instead of how long things took before, so they guess too low. Psychologists call this the planning fallacy. In one study, students expected to finish a thesis in 33.9 days and took 55.5 (Buehler and colleagues, 1994). The page on feeling overwhelmed fits a week’s list to the hours you have.
5. Bring the number to the conversation. Gallup’s causes include workload, time pressure and too little support from a manager. Showing a manager a count of last week’s hours starts a different conversation from saying “I’m tired.”

A good way to run this test counts your work hours from what you already write or say, evenings and weekends included. No timer to start and stop. Most journaling apps stop at how the week felt. They keep the exhaustion, which matters, but not the hours behind it.

One app built for this is Think in Numbers, a smart journaling app with time tracking built in.

You write or say your day in your own words, as it happens or all at once. The app reads what you wrote and counts the hours that went to each part of it: work, evenings and weekends included, sleep, your phone, and the time you never mentioned (shown as unaccounted). Then it shows those hours over days and weeks. A target for your work hours holds each week against your real ones.

Write my first day

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Pick the line yourself. The research above gives two reference points, 49 and 55, and many people will want theirs lower. The test runs four weeks because one good week proves little: deadlines come, and what matters is whether the hours come back down after them.

Here is how four weeks went for the example person from the table above, who set three rules for themselves from week two.

Week one came to 58h 30m, with nights averaging 6h 11m. Week two, after the three rules, was 50h 30m. Week three had a proposal due on Wednesday and went back up to 53h 30m.

Week four was 45h 15m, with 2 days at zero and nights averaging 7h 26m. The deadline week is the reason the test runs four weeks: the hours rose, and then they came back down.

Hours are one part of work stress, and work stress is one part of how you feel. The NIMH, a US government research institute, advises that if you are struggling to cope, or your symptoms won’t go away, it may be time to talk to a professional. A doctor is a good first call.

In the US, if you are in emotional distress, call or text 988, or chat online at 988lifeline.org. It is free, confidential and open all day, every day (the 988 Lifeline). This page reports what research found. It is not medical advice.

Every figure on this page links to one of these sources, read on the date shown or in full.

1. World Health Organization (read October 1, 2026). Burn-out an “occupational phenomenon”: International Classification of Diseases.
2. Gallup (read October 1, 2026). Employee Burnout, Part 1: The 5 Main Causes.
3. Robinson, J. P., Martin, S., Glorieux, I. and Minnen, J. (2011). The overestimated workweek revisited. Monthly Labor Review, June 2011, U.S. Bureau of Labor Statistics.
4. Wendsche, J. and Lohmann-Haislah, A. (2017). A meta-analysis on antecedents and outcomes of detachment from work. Frontiers in Psychology, 7, 2072.
5. Sonnentag, S. (2018). The recovery paradox: Portraying the complex interplay between job stressors, lack of recovery, and poor well-being. Research in Organizational Behavior, 38, 169 to 185.
6. Pencavel, J. (2014). The Productivity of Working Hours. IZA Discussion Paper No. 8129, Institute of Labor Economics.
7. World Health Organization (read October 1, 2026). Long working hours increasing deaths from heart disease and stroke: WHO, ILO.
8. Pega, F., Náfrádi, B., Momen, N. C., Ujita, Y., Streicher, K. N., Prüss-Üstün, A. M. and colleagues (2021). Global, regional, and national burdens of ischemic heart disease and stroke attributable to exposure to long working hours for 194 countries, 2000 to 2016. Environment International, 154, 106595.
9. de Bloom, J., Kompier, M., Geurts, S., de Weerth, C., Taris, T. and Sonnentag, S. (2009). Do we recover from vacation? Meta-analysis of vacation effects on health and well-being. Journal of Occupational Health, 51(1), 13 to 25.
10. Derks, D., van Mierlo, H. and Schmitz, E. B. (2014). A diary study on work-related smartphone use, psychological detachment and exhaustion: Examining the role of the perceived segmentation norm. Journal of Occupational Health Psychology, 19(1), 74 to 84.
11. Buehler, R., Griffin, D. and Ross, M. (1994). Exploring the "planning fallacy": Why people underestimate their task completion times. Journal of Personality and Social Psychology, 67(3), 366 to 381.
12. U.S. National Institutes of Health, NIMH (read October 1, 2026). I’m So Stressed Out! Fact Sheet.
13. 988 Suicide and Crisis Lifeline (read October 1, 2026). 988 Suicide and Crisis Lifeline.