I assume you're joking... but it's hard to miss how much of corporate life becomes a game of chicken where managers try to find how hard they can push workers before the workers push back - or, to what extent workers will sacrifice rest and their own well-being for continued employment. Of course, the manager has a manager who's pushing them, too.
There are likely many points in a work environment where the local minima and maxima of work output and employee happiness meet. The important thing is to remember that those are balanced in the small, and that a wider perspective may yield a better outcome on both measurements if you care to search for it.