Want to work 9-to-5? Good luck building a career

And that's exactly the problem: there are enough hours in the day, and that "Monday morning deadline" is literally made up.

You are most likely not doing a heart transplant where deadlines are real (or fixing a bridge that's almost going to collapse).

If you, as a manager, cannot arrange for deadlines to be real and realistic, you suck as a manager: it is not the employee's fault for possibly having other arrangements to go to.

How about policies like those enforced in some European countries where it is illegal to contact an employee outside of normal working hours?

how about good luck building any wealth at all working under others without sizable equity :~)