I work a 9/80 currently (so 9 hours a day every Monday through Thursday and then alternating 8 hours every other Friday with a Friday off) and I have grown to love it so much I think I would have an extremely hard time taking a five day workweek job. I also think I would easily work for 10s if it were an option as a constant three day weekend would be wonderful.

I have done my own research on my productivity levels and found that I pretty much get nothing done on working Fridays anyhow, leading me to believe a 35 ish hour four day workweek would be more than sufficient to get everything I currently do done. That’s notwithstanding the fact that during each day I swing back and forth between high and low productivity too, so really something closer to like 25 hours a week of total work is accurate. So something like a certain minimum mandatory set of hours with flexible time to get your tasks done as others have suggested would be the ultimate solution.