I know someone whose a teache/rebby. They always say how nerve wracking it is when the teacher/rebbi before them runs over time. (they teach right before lunch break/recess) and it’s not fair to the kids to keep THEM overtime.
about being on time for other types of work it depends. i know someone who works in a place where – they have to be there from a “basic time” to a “basic time” not exact. Or if the work has to get done, doesnt matter exacty what time youre there. but in other jobs such as offices that close and open at a certain time it definitely does matter and is unfair