One of my previous jobs did just that: 10-hours days, 4 days a week. First as an experiment for a month. They found our that performance has grown across the bo

One of my previous jobs did just that: 10-hours days, 4 days a week. First as an experiment for a month. They found our that performance has grown across the board (engineering, sales, support, etc) and then made it permanent; everybody rejoiced. It was so much easier since then.