Time Availability: Assessing Causal Ordering in the Performance of Paid Labor and Unpaid Housework

Abstract

Key to understanding gender inequality in families, the time availability hypothesis implies that one’s time in paid work negatively affects one’s time in unpaid housework. Although dozens of studies have demonstrated an association between husbands’ and wives’ time in the paid labor force and their performance of housework, most suffer from numerous limitations, especially the use of unidirectional modeling and cross-sectional data. This is problematic since these methods cannot assess causal directionality and since human capital theory suggests that housework responsibilities affect time in paid work. Using structural equation modeling and two stage least squares regression—two methods that can help parse causal ordering—and data from the 1987–88 and 1992–94 waves of the U.S. National Survey of Families and Households (NSFH) this study finds no support for the time availability hypothesis regarding the association between paid work hours and unpaid housework. Consistent with human capital theory, husbands’ housework time affects their own time in paid work. No association is found among wives.