Conversely, prolonged overwork (continual staff shortages), lack of food, absence of festivals, lawlessness, sickness or punitive taxation can also be reasons for poor mood.
en.wikipedia.org By his second year, he had resigned himself to such results, and while still working diligently, decided not to overwork himself as before.
en.wikipedia.org Directed attention fatigue occurs when a particular part of the brains global inhibitory system is overworked due to the suppression of increasing numbers of stimuli.
en.wikipedia.org The controllers complained about being overworked, underpaid, overstressed, and forced to work with outdated equipment.
en.wikipedia.org His death was attributed to nervous exhaustion, the result of overwork.
en.wikipedia.org