The short answer: Burnout is a work problem. Depression is a whole-life problem. The World Health Organization defines burnout as the result of chronic workplace stress, and says the term should not describe other areas of life. If the exhaustion, flatness and loss of interest follow you home, into weekends and into things you used to enjoy, depression is the more likely answer. The two overlap heavily, so if you are unsure, screen for depression rather than assume it is "just burnout."
What does the WHO actually count as burnout?
Burnout has an official definition, and it is narrower than most people think. The WHO includes it in the 11th revision of the International Classification of Diseases (ICD-11), code QD85, as an "occupational phenomenon." The WHO states plainly that it is not classified as a medical condition.
Instead, it sits in the chapter on factors influencing health status or contact with health services. Those are reasons people see a clinician that are not classed as illnesses. The ICD-11 definition describes burnout as a syndrome resulting from chronic workplace stress that has not been successfully managed. It has three dimensions:
- Exhaustion: feelings of energy depletion.
- Mental distance: negativism or cynicism about your job.
- Reduced professional efficacy: feeling you no longer do your work well.
The last sentence of the definition is the one that matters most here. Burnout "refers specifically to phenomena in the occupational context and should not be applied to describe experiences in other areas of life." So by the WHO's own terms, burnout is tied to work. Caregiving exhaustion or a hard year at home is something else.
What makes it depression instead?
Depression is a diagnosable medical condition with defined criteria. NIMH summarizes the DSM-5 definition of a major depressive episode as a period of at least two weeks with depressed mood or loss of interest or pleasure in daily activities. That core symptom must come with a majority of other specified symptoms, such as problems with sleep, eating, energy, concentration or self-worth.
Notice what is missing from that definition: any mention of a job. Depression does not care where the stress came from. It shows up at work, at home, with friends and on vacation. NIMH estimates that 21.0 million U.S. adults, or 8.3%, had at least one major depressive episode in 2021.
The symptom that separates the two most clearly is anhedonia, the loss of pleasure in things you normally enjoy. Hating your job is a burnout feature. No longer enjoying your hobbies, your friends or your favorite food is a depression feature.
How much do burnout and depression overlap?
A lot, and more than older research assumed. A 2015 review of 92 studies by Bianchi, Schonfeld and Laurent concluded that the distinction between burnout and depression is "conceptually fragile." The authors noted that burnout still has no consensual diagnostic criteria, which makes clean separation hard.
A 2016 study of 1,386 U.S. schoolteachers made the overlap concrete. Burnout and depressive symptoms were strongly correlated (0.77). In categorical analyses, 86% of the teachers identified as burned out met criteria for a provisional diagnosis of depression. The authors concluded that the state of burnout is likely to be a form of depression.
Not every researcher agrees. A 2019 meta-analysis by Koutsimani and colleagues, covering studies from 2007 to 2018, found a significant association between burnout and depression (r = 0.520). Its authors read the evidence as showing no conclusive overlap, and argued the two are different constructs. The same analysis found a burnout link with anxiety (r = 0.460), which is worth knowing if worry is part of your picture. Our sister site anxiety.md covers that side.
The practical takeaway does not depend on who wins the debate. If you feel burned out, there is a real chance you also meet criteria for depression. The 2016 teacher study noted that treatments for depression may help workers identified as burned out.
How can you tell them apart in your own life?
There is no lab test for either. These questions are not diagnostic, but they point in a useful direction.
- Where does it happen? Burnout is context-bound. You dread Sunday night and feel drained at your desk, but you still come alive at a friend's dinner. Depression is pervasive. The flatness is there at the dinner too.
- What happens on a real break? Call it the vacation test. With burnout alone, a week fully away from work often brings some relief, even if it fades when you return. With depression, time off may change little. Some people feel worse without the structure of work.
- Is pleasure gone everywhere? Losing interest in your job fits burnout. Losing interest in music, sex, food or people you love points toward depression.
- How do you see yourself? Burnout tends to aim cynicism at the job or the employer. Depression more often turns inward, as guilt, worthlessness or self-blame.
- Are there body changes? Big shifts in sleep, appetite or weight, and slowed thinking, are listed depression symptoms. They can appear in burnout too, but they deserve a closer look.
- Any thoughts of death or not wanting to be here? These are never part of burnout. They call for help now, not later.
People often mislabel depression as a character flaw. If you are telling yourself you are just lazy or weak, read our piece on depression versus laziness.
Can a quick screening tool help you sort it out?
Yes. The PHQ-9 is a nine-question depression screen that doctors use widely. Each question matches one of the nine DSM depression criteria and is scored from 0 ("not at all") to 3 ("nearly every day").
In the original validation study of 6,000 patients, a score of 10 or higher had a sensitivity of 88% and a specificity of 88% for major depression. Scores of 5, 10, 15 and 20 marked mild, moderate, moderately severe and severe depression.
The PHQ-9 does not ask about your job, which is exactly why it helps here. A high score says your symptoms reach beyond a work problem. It is a screen, not a diagnosis. Bring the result to a clinician who can rule out other causes, such as thyroid problems, anemia or sleep disorders.
When should you get help, and from whom?
Get help if symptoms have lasted two weeks or more, if they show up outside work, or if a PHQ-9 score is 10 or above. A primary care clinician is a fine place to start. They can screen, check for medical causes and refer you to therapy or psychiatry.
Burnout and depression call for different first moves. Burnout often improves when the work situation changes: workload, control, support or time off. Depression usually needs treatment in its own right, such as psychotherapy, medication or both. See our comparison of depression treatment options. Changing jobs alone rarely fixes a depressive episode.
If you have thoughts of suicide or self-harm, do not wait. NIMH advises calling or texting the 988 Suicide & Crisis Lifeline at 988, or chatting at 988lifeline.org. In a life-threatening situation, call 911.
The bottom line
Burnout, as the WHO defines it, is a work-bound syndrome and not a medical diagnosis. Depression is a medical condition that spreads across your whole life. The biggest tell is whether the exhaustion and loss of pleasure stay at work or follow you everywhere. Research shows heavy overlap, so a "burnout" label should not stop you from screening for depression. If the PHQ-9 comes back high, or rest does not help, talk to a clinician.
Last updated: September 2026. This article is for informational purposes only and does not constitute medical advice. If you are unsure whether you are dealing with burnout or depression, talk with a licensed clinician.