Subtypes
In 1991, Barry A. Farber in his research on teachers proposed that there are three types of burnout:

"wearout" and "brown-out," where someone gives up having had too much stress and/or too little reward
"classic/frenetic burnout," where someone works harder and harder, trying to resolve the stressful situation and/or seek suitable reward for their work
"underchallenged burnout," where someone has low stress, but the work is unrewarding.Farber found evidence that the most idealistic teachers who enter the profession are the most likely to suffer burnout. Caregiver burnout
Burnout affects caregivers. Relationship with other conditions
A growing body of evidence suggests that burnout is etiologically, clinically, and nosologically similar to depression. In a study that directly compared depressive symptoms in burned out workers and clinically depressed patients, no diagnostically significant differences were found between the two groups; burned out workers reported as many depressive symptoms as clinically depressed patients. Moreover, a study by Bianchi, Schonfeld, and Laurent (2014) showed that about 90% of workers with very high scores on the MBI meet diagnostic criteria for depression. The view that burnout is a form of depression has found support in several recent studies. Some authors have recommended that the nosological concept of burnout be revised or even abandoned entirely given that it is not a distinct disorder and that there is no agreement on burnouts diagnostic criteria.
found that for workers with exhaustion disorder, CBT was better than a Return to Work Intervention (RTW-I) for reducing stress; and that people whose symptoms were primarily depression, anxiety or insomnia had reduced total time away from work after a RTW-I than for CBT.Ybe Meesters found that light therapy (similar to that used for Seasonal Affective Disorder) may be effective.Gordon Parker et al. found that the most useful treatment strategies appear to be talking to someone and seeking support, walking or other exercise, mindfulness and meditation, improving sleep, and leaving work completely or taking time off work.Korczac et al. in a 2012 literature review found that "only for cognitive behavioural therapy (CBT) exists an adequate number of studies which prove its efficacy. "Ahola et al. in a 2014 literature review found that less than 1% of 4430 papers reviewed contained scientifically rigorous data, and that the 14 well-designed studies collectively "showed that such [randomised control trial] interventions did not succeed in alleviating burnout symptoms. "Lindsäter et al. in a 2022 literature review note the reported success of CBT, acceptance and commitment therapy (ACT), a multimodal rehabilitation program (MMR) program (involving group CBT, applied relaxation in a group, individual psychotherapy, physiotherapy, lectures, and medical treatment), physical exercise, cognitive training, consuming rhodiola rosea extract, and participating in an African dance program. However, overall they noted that "a multitude of interventions have been investigated for exhaustion disorder, but the evidence for any one type of intervention is limited.