Women, on average, make only 78 cents for every dollar earned by men nationally, according to the Institute for Women’s Policy Research . That’s despite the fact that women comprise almost half of the U.S. workforce and are the equal or main breadwinners in four out of 10 families.

Lieberman and other women have worked hard to break down that gender-imposed glass ceiling by entering fields dominated by men. But at this point, integration is at a near standstill and that persistent segregation in many fields, including professional sports, is one reason why a wage gap still exists.