Existing theories of occupational segregation appeal to family‐related responsibilities, employer discrimination, and socialization to explain why women and men occupy such different jobs. We suggest that occupational segregation is perpetuated because women (and men) may be penalized in the marriage market for making nontraditional occupational choices. As an empirical test, we asked students to rate personal ad‐like vignettes. Holding all else equal, having a gender‐nonconforming occupation reduced the attractiveness of both men and women.