The notion of bringing home 80 cents for every dollar pocketed by a man on a national basis is unsettling enough. But it's even more startling when those lost wages are added up.

Overall, it amounts to $10,000 in lost wages a year, says Debra Ness, president of the National Partnership for Women and Families. That chunk of cash could pay for 14 more months of child care, 74 more weeks of groceries and an additional 10 months of rent for the average woman.