As someone who has worked hard for years (at some point I had three con-concurrent jobs), I’m not sure working hard is the variable that causes burnout :thinking_face:
I will say tho, it gave me persistent back problems and RSI for two years :). But that again is not just “working hard”. It was bad posture, lack of stretching, breaks and exercise, I think.
Edit: Perhaps it’s the nature of the work or working hard unhealthily (physical and mental?) or the person’s characteristics.
A bit of both I suppose. In my case I think taking on too many responsibilities and stressing out too much over any production issues that arose were the main ingredients for disaster.
But there were others as well. Burnout is complicated.
Working too hard means you're liable to disappear for 6+months, no sane employer should want that!