Based on three related theories which explain couple's behavior in household division of labor, this study derived and tested relevant hypotheses from theories. The theories pertain to relative resources model, time availability model, and gender role model. Sampled data comprised of 516 couples' matched-pair information, which compares husband's and wife's relative status in education, income, employment hours, wage rates, and domestic working hours is employed for empirical verification. Results show significant factors which affect husband's behavior in sharing more housework include high education for both husband and wife, husband's and/or wife's egalitarian ideal about gender roles, and wife's income as a proportion of family's total income. Factors deny husband's support for housework include wife' relative employment hours and her relative wage rate. Our findings show the ideal factor of gender equality seems more influential in shaping husband's behavior than practical time conflict due to wife's employment. Nevertheless wife's income share still has power in this.
