Photo of a book that reads "Trips to the lavatory: 1.62 minutes. It is computer precise; not 1.6 or 1.7 but 1.62! For fatigue: 1.3 minutes. Sitting down after standing too long: 65 seconds. For monotony: 32 seconds—and so the grotesque litany goes on."
In the 1980s in one auto plant, computerisation was used extensively for worker surveillance of toilet breaks.
Union agitation around this led to a 'rest allowance' being implemented in workplace agreements, with workers winning toilet breaks of 1.62 minutes (i.e. 97.2 seconds).