Who is ready for a three day work week? You are if you are over 40! A new study in Australia has found that productivity for people over 40 drops if they work too long. Cognitive function in 40-plus people was found to decline after working 30 hours….meaning after 3 and a half days you’re done. Your middle aged mind needs a break to get back to working at peak efficiency. Read more about the study here. But it appears the answer for anyone older that four decades is a 3 day work week. Who’s in? Now we just have to convince the boss.