It’s been thought that once industries achieve gender balance, bias will decrease and gender gaps will close. Sometimes called the “add women and stir” approach, people tend to think that having more women present is all that’s needed to promote change. But simply adding women into a workplace does not change the organizational structures and systems that benefit men more than women. Our new research (to be published in a forthcoming issue of Personnel Review) shows gender bias is still prevalent in gender-balanced and female-dominated industries.