Well, but here's the thing: you've figured out that you're more productive on shorter hours. So really you want to prevent those people who work long hours from

Well, but here's the thing: you've figured out that you're more productive on shorter hours. So really you want to prevent those people who work long hours from doing so, because they'll actually do better. Not much research in sofware AFAIK, but there's a bunch of research in other fields showing maximal output is at 40 hours a week, with rapid fall-off at longer working hours. See http://www.igda.org/?page=crunchsixlessons http://www.igda.org/?page=crunchsixlessons So it's your job as a manager to prevent burn out and maximize output by encouraging people not to work too long.