Pew Research Report: Modern Parenthood
Married parents spend more time at work than unmarried parents, counting housework, child care and paid work together, and have less leisure time than other parents. Married parents are also more egalitarian than cohabiting couples. Married fathers’ time in paid and unpaid work totals about 55.5 hours per week, 1.4 hours more than that of married mothers. Yet the total work hours for cohabiting fathers are almost three hours less than that of cohabiting mothers.