When I was at school, teachers were often deadly accurate with bits of chalk and, in extremis, with the board rubber.
Outlandish behaviour could be certain to result in judicious use of the cane, or in the case of the chemistry teacher, a wooden retort stand. Weapon of choice for the PE teacher was a plymsol (tennis shoe).
Then again, in my day there wer no security scanners or body seraches and you didn't have to pack your lunch in a see through bag. The incidence of serious bodily harm to anyone by anyone was nil.
Sadly, not so long ago when the unions were very strong, it was expected that every worker was entitled to so much overtime each week whther there was wrok available or not and when there was work available the work rate was strictly controlled. In those days it was not uncommon for the entire night shift to be asleep and no one expected any different.
Some workers resented this but thyere was little they could do except what was expected of them by their colleagues and the unions.
I think the occassional lapses of employees should be ovelooked unless there is a clear work and safety issue. Repetitive behaviour is something else.
Much more serious is when employees choose to die at work.
JMW