I think that the evidence that productivity rises as the workweek shortens provides some evidence of this. There's only so many hours you can be productive-- e

I think that the evidence that productivity rises as the workweek shortens provides some evidence of this. There's only so many hours you can be productive-- energy is limited. Employers usually can't insist that you're all-business working at maximum productivity for a 40 hour week because most people, in practice, don't/can't come anywhere close to attaining this and it's enough time. So the door is opened to random work social conversations, checking facebook, personal phone calls, etc. Further, the perceived cost of a questionably-valued meeting goes down as there's more hours in the week to fill. Shortening the work week and demanding similar productivity would be good for everyone, I think.