science

Men that are upset that their wives out-earn them are missing the point of marriage. The point of marriage isn't him vs her, its the two of you together against the world. If she is earning more than him, then that benefits him too because he's part of the marriage.

I'm constantly astonished when I hear of men that are upset by their wives out-earning them. Some of these men have even sabotaged their wife's work or changed the circumstances at home preventing her from continuing in the job where she out-earns him. My only hope for these women is they realize their husband's love is conditional on him being dominant over her, and that she seeks out a better future where she can be her best self.

Specifically on women's mental health deteriorating in this situation, often this can occur when she's still expected to pick up the majority (or all) of domestic labor in addition to her well-paying job. Women are still largely expected to "do it all" by not only their partners but by society. If you're not a perfect businesswoman, mother, and domestic servant all in one all the time, well you're failing your spouse, your children, your boss, your identity as a woman, etc. Women don't just need their male partners to step up for them in labor alone, but also to reevaluate their social role that they are propagating through their (in)actions. What are you teaching your kid if mom is the only one who cooks dinner? Or cleans regularly without reminders? Or keeps track of doctor's visits, field trips, etc?

There goes the patriarchy hurting men again.

Gotta add that my wife makes more than me and I’m sure glad she does.

Men who are uncomfortable with their wives earning more money are also probably more prone to feeling some stigma around addressing their own mental health issues

Maybe this happens because the woman who earns more often emasculates her husband with snide remarks or jabs. Unlike the other way round where men are expected to earn more than their spouse otherwise they're "less of a man".

Maybe that's contributing to the higher mental health issues.

This has to depend on the guy. My ex, he always made less $ than me because I went to college after having kids and got a better job, then asked him if he wanted to do the same he said no, and we made enough as long as we both worked, it wasn't anything we really thought about, only about hours worked by each of us. Now when he was unemployed it all went to hell, but not as long as he worked at all. I valued his work, not the wage.

My husband, he wants to make more than me but sees it as a challenge, he wants me to make more money, because it would motivate him to make more money, he just wants us to have more money. He is very happy for me to succeed, and I'm valued for contributions at home and making money, and (critically important) he does as much as me around the house, and our busy work seasons aren't at the same time so we are able to support each other during those months. I do think it's a sexist thing (he does too but still feels it) but don't actually care, it works fine for us in practice.