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Yeah, I expect people under me to be out of the office by 6 every night.  If you’re doing overtime, then someone scheduled the work wrong or you aren’t working efficiently.
Depends upon the job I suppose. I work in a place where if you don’t get things done on time, you lose contracts for large projects and can bankrupt a portion of the company quickly so it very much doesn’t apply everywhere. And this is one example >

Getting things done on time is part of doing the bare minimum of your job.