One oft-cited reason why more female executives don’t advance to top management jobs is their lack of access to informal organizational and industry networks. Some people blame unconscious bias: High-ranking men connect more easily with other men. Others cite professional and personal obligations, from office housekeeping to child-rearing, that disproportionately fall to women, leaving them less time to develop professional relationships.

A version of this article appeared in the November–December 2019 issue of Harvard Business Review.