OK, Facebook executive Sheryl Sandberg didn’t say “join a union.” But that’s the message the vast majority of working women should be considering this Women’s History Month. The best way for most women to improve their working lives is through a union.   

The new PBS documentary, "Makers: Women Who Make America," shows how the women's movement changed the workplace for women, men and families. Two of the young "Makers" highlighted in the film, Sandberg at Facebook and Marissa Mayer at Yahoo, now dominate the news. Here's what neither of them tell you: Union women earn more than nonunion women and have better benefits and working conditions.