I'm finishing up some training on influencing people, and some of the things the instructor stressed were:
1. Go into conversations with an open mind and heart;
2. Be curious about your DH - tell him you want to understand him, and ask why it's important to him to keep working;
3. Remember that he's a person, not an object to boss around.
The trick is to really honestly do these things. Ask him to tell you why it's important. Ask open-ended, non-leading questions if you need clarification. And then keep your mouth shut. Don't give any opinions, just tell him you'd like a few days to digest what he has said. You may be surprised at what you hear, and the extra insight into your husband's mind.
I also recommend visiting a professional as a neutral third party. If both partners go to a counselor with an honest desire to improve the relationship, it can be very helpful. And if he won't go with you, go alone.
Then and only then would I recommend just retiring and letting him deal with his own feelings. If he isn't practiced at doing this already, it's a little too much like throwing a kid into the deep end of the pool to teach them to swim.
Divorce is a last resort. I know people can be really flippant online, but don't even let the word cross your lips until all other options have been tried and you're both still miserable.
Excellent, excellent advice.