If you don't have access to WSJ: https://www.aol.com/articles/stay-home-parent-might-want-182451505.html

1 in 4 prenups now include a "leaving-the-workforce" clause. If one spouse leaves their career to raise children, the agreement can provide predetermined compensation if the marriage ends. Here's what they're envisioning:

"We can do formulas like "for each year of the marriage, payor will pay 6 months of alimony at 20% of his gross income as determined by his/her tax return for the prior year,'" he told The Independent in an email. "Or it can be a flat number, like $50,000.00 for each year of marriage."

Apparently the rationale is that "Stay-at-home parents, 80 percent of whom are women, lose up to $295,000 in salary and retirement savings by pausing their careers to raise children."

Okay, but how much money do men lose when they financially support their family while the woman gets to say home? Such asymmetric logic!