Just playing it straight, if a wife who does not have children yet (or does not/cannot have them at all) is just sitting home on her rump eating bonbons and watching TV like Peg Bundy, then, yes, she needs to get off of that rump and do something. Let her work and put money towards the couple's future home and child-rearing.
There are, however, two things to consider:
When women get out in the world working, they are highly susceptible to bad influences from (a) other women who would seek to "liberate" them, or drag them into "fun-loving" or even adulterous situations with men (or perhaps even other women, lesbians do exist) and (b) men who think no more of breaking up a marriage than the man in the moon, there's no better way to find someone to have an affair with, than in an office situation.
Is a husband who works out in the world among women as susceptible to being seduced away from his home and marriage, as a woman who works out in the world among men? It's a legitimate question. I've never heard of a divorce where either money or sex (or both) wasn't in some way involved. Keep in mind, too, that 70 percent of all divorces are filed for by the wives. They don't just get up one morning and say "hey, I don't want to be married anymore". There's almost always a history, a backstory to it.
And the other thing is, once she does have children, her "job one" is the home and family.
Sadly, I'm in a position to know what I'm talking about. I cannot say more than that.