I wouldn't be surprised if % of effective hours remained the same, regardless if you are working 40 or 30 hours a week. I especially doubt it would increase tot

I wouldn't be surprised if % of effective hours remained the same, regardless if you are working 40 or 30 hours a week. I especially doubt it would increase total productivity, I could accept that it would improve efficiency. Any short term study will observe effects of people wanting to "reward" shorter working week and aren't really representative. This type of change needs a long "stealth" study period.