I'd go with 4 days. My last two jobs have been less than full time (originally 3.5 days a week, right now it's more like 4.5 days/week), and it's pretty great.

I'd go with 4 days. My last two jobs have been less than full time (originally 3.5 days a week, right now it's more like 4.5 days/week), and it's pretty great. If anyone wants to do this the key is: 1. Have some money in the bank so you're nor desperate for a job. 2. Have in-demand skills. 3. Get some practice negotiating. 4. Ideally do this at place you already work, or with consulting client: much easier than negotiating shorter workweek with people who don't know you. (If anyone is interested I'm writing a book on how programmers can get to a sane workweek: reasonable hours, remote work, or even a shorter workweek, though that's harder. Initial email course is at https://codewithoutrules.com/saneworkweek/ https://codewithoutrules.com/saneworkweek/ until the book is done.)