9 - 5 doesn't make any sense for bosses as, when paying by the hour, they pay people to waste time. Which can't be good for them.

It makes more sense for workers, economically, as they get payed for time where they aren't working but as a result they feel as if they are wasting their time. A combination of less hours and higher pay, so they make as much as they did working 9-5 would be the best option for workers.