While not fully matching your question: I've done 4/10's (We did Mon-Thur with a full 3-day weekend) for long stints and both myself and my crews loved it. That

While not fully matching your question: I've done 4/10's (We did Mon-Thur with a full 3-day weekend) for long stints and both myself and my crews loved it. That extra day at home was a huge boon especially for the parents wanting more time with their kids, or anyone who had some time consuming crafty kind of hobbies. One of my guys finished a hand-made canoe about 3 months faster than he'd figured he would. As for the working side of it, we found ourselves more efficient as we got more done in longer days than we would have with less time each day. For me, just the plain business day available to do errands that would have otherwise required me to pull long lunches or half days at work was a huge help. And on a more personal note: an extra weekend day gave my introvert ass a day to myself to catch up on the reading I wanted to do, or study something, whatever, while still having the 'normal' weekend to attend a bbq or party or some other thing my more social friends were always organizing. As saulpw said in a sister comment: > 4-days a week with consistent 3-day weekends was definitively the best work schedule I've ever had. Totally, 110% agree.