because that's not logical. especially whet you're in a job that's not actively helping people, like call centers.

The logic chain is not that simple and stops where you say. Why get income? Why would there be a need for "income"? What is income? Why does it need to be "a job" for 8 hours? And so on.

If you completely illuminate the issue, you'll likely find that no, you don't really understand the logic of "doing job for 8 hrs = get income".

Also sitting around 8 hours and not being efficient at all instead of doing stuff when it works and makes sense.

Of course that does not apply to all jobs but most office related things are batshit insane levels of inefficiency. The psychological implications of this are yet another issue.