[rabidrat]

I can do about twice as much work if I work 'fewer' hours. Actually it's not about the number of hours, but the expectation that I should be working at some time or for some number of hours. My best work happens in spurts of a few hours a day, or less frequently, a binge of 20 hours over a 2-3 days (after which I need to take a step back). So a company who can offer me this kind of flexibility, to work when and how I work best, could pay me half the BigCorp compensation and get more and better work out of me.

[satokema]

This. Unless I am figuratively on fire and flying through work, somewhere around the 4-6 hour mark I hit a slowdown patch and my quality/concentration goes through the floor.

I do six days of 4-6s for my current position and feel as effective as any of my co-workers, if not more-so.