I myself am used to not being monitored. But a famous PCB factories in my country has famous policy that production line workers should always "run" to the toilet. Consequences if caught walking.

Also famous anecdote of Terry Guo: during breaks between meetings, top level executives including Guo might go to the toilets. If you were one of the executive and happen to pick a urinal right next to Guo, he would peek if your urine looked healthy. If it looks healthy, that means he can and will put more workload on you.