Maybe we should stop denying it: Women can really sabotage other women’s careers. And I’m not even talking about women who compete against each other at work. No, I’m talking about the hidden power behind the throne: the boss’s wife.

According to a new study about the attitudes of married men in the work force, the marriage structure of men can influence women’s advancement at the office. It also offers an explanation as to why women seem stuck in the middle ranks.