I don't have a spouse yet, but (and that's a caveat), I do recognize that it depends on if you conduct your finances jointly or separately, depending on taxes and preferences. I think that if you're like me, and want to retire incredibly timely, then it would have to be understood and agreed upon, because the last thing I personally need is for someone to be upset that I am retired, and they are not. Money is typically the root of all domestic problems :|