The stress of hours of work.
D002940:Circadian Rhythm; D005221:Fatigue / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D007588:Job Satisfaction; D005222:Mental Fatigue / Q000209:etiology / Q000517:prevention & control; D009790:Occupations; D011597:Psychomotor Performance; D012890:Sleep; D012892:Sleep Deprivation; D013312:Stress, Physiological / Q000209:etiology / Q000517:prevention & control; D013315:Stress, Psychological / Q000209:etiology / Q000517:prevention & control; D013997:Time Factors; D014937:Work; D014940:Work Schedule Tolerance