> Companies will smartly balance the amount of work allocated to people.

Tell me you never worked in a workplace or was completely oblivious about workload of various people, without telling me.

Also, in my experience, people who consistently spend a lot of time in work tend to be very ineffective with their time. They are in the "overwork yourself, be ineffective, try to compensate by working more, be tired make more mistake, try to compensate" cycle.