Even "breadwinner" wives do more housework than husbands

Almost half of women in opposite-sex marriages earn as much as or more than their husbands, a share that's tripled since the early 1970s. Yet even women who out-earn their male spouses undertake more unpaid labor such as childcare and housework, according to a new study from the Pew Research Center. 

About 16% of wives are the breadwinners in their families, while another 29% earn roughly the same amount as their husbands, according to the analysis, which is based on several sources of data including the U.S. Census Bureau and the American...