Why are Married Men Working so Much?

We document a negative trend in the leisure of men married to women aged 25-45, relative to that of their wives, and a positive trend in relative housework. Taken together, these trends rule out a popular class of labor supply models in which unitary households maximize the sum of the spouse's utility. We develop a simple bargaining model of marriage, divorce and allocations of leisure-time and housework. According to the model, a rise in women's relative wage will reduce husband's leisure and marriage rates when the quality of single life is relatively high for women. Calibration to US data shows the trend in relative wages explains most of the trend in relative leisure and about a third of the trend in housework, while the simultaneous trend in home-durables prices explains the balance of the housework trend