Won't work if you try to "force" or "coerce" him.

Long story short is that you need to ask him to try it just once to see how it goes (make sure you'r MORE productive those days with proof to backup it up).

This is the best read on the subject. If you have a long commute I recommend buying the audio book version. The guy's just awesome to listen to.

http://www.amazon.com/4-Hour-Workweek-Escape-Live-Anywhere/dp/0786158964/ref=tmm_abk_title_0