It really depends. If you live in a condo and you free time is sports, meetings friends, etc. a six hours work day is more important.
If you build your house on your own, cultivate green land etc. the four day workweek is more important as these kinds of work require a lot of preparation time.
Inflamatory post but this would actually mean managers would have to manage. You can't go to a seminar and cocktail party and come back with the insights to properly manage a team where people opt in to the model that works best for them.
One can give all the trust in the world, but a good manager must also align incentives towards business goals and create a structure for tracking progress.
Adding on top of that care and integration for the personal preferences of the team members… that would truly be a sight to behold.
If you build your house on your own, cultivate green land etc. the four day workweek is more important as these kinds of work require a lot of preparation time.
Opt in models?