With the recession on the brink of becoming the longest in the postwar era, a milestone may be at hand: Women are poised to surpass men on the nation’s payrolls, taking the majority for the first time in American history.

The reason has less to do with gender equality than with where the ax is falling.

The proportion of women who are working has changed very little since the recession started. But a full 82 percent of the job losses have befallen men, who are heavily represented in distressed industries like manufacturing and construction. Women tend to be employed in areas like education and health care, which are less sensitive to economic ups and downs, and in jobs that allow more time for child care and other domestic work.

“Given how stark and concentrated the job losses are among men, and that women represented a high proportion of the labor force in the beginning of this recession, women are now bearing the burden  or the opportunity, one could say  of being breadwinners,” says Heather Boushey, a senior economist at the Center for American Progress.

Economists have predicted before that women would one day dominate the labor force as more ventured outside the home. The number of women entering the work force slowed and even dipped during the boom years earlier this decade, though, prompting a debate about whether women truly wanted to be both breadwinners and caregivers.