I once worked at amazon. They hire managers who can barely operate computers and can't code. They like to keep engineers on call.
So for instance, on more than one occasion I was forced to wake up and fix a chronic problem caused by another team at 3-4am,and would show up at 10:15 and miss he scrum.
Got chewed out for being 15 minutes late on only 5 hours sleep.
?
Just don't do that then. In at 9, out at 5. No problem, life goes on.