If he really is a workaholic...you aren't gonna change him, and if he decides he wants to change it's gonna be a long hard row to hoe.

If he just has a demanding job, maybe moreso than you're used to, talk to him and figure out where halfway is and see if he'll meet you there. Then, after a while, you can decide if that's enough for you. It may not be. A workaholic probably couldn't even find the halfway point.

Good luck to you, Hon!