You should get a whip.
Or you know what? How about - it shouldn't be this way, I know - but, how about if you set up a reward system? I mean I know it's not fair 'cause you're not getting anything for when you do work - but maybe if you set it up for him, with time, you'll condition him into doing those things - even when there is no reward. I mean it's worth a shot - you have a lifetime together ahead of you. And it doesn't have to be something big either - just little somethings, favorite foods, sex stuff, etc. :) Just an idea.