After the enactment of the Equal Employment Opportunity Law in Japan, an increasing number of women have been working after marriage and childbirth. The lower their husbands' income, the more married women did enter the labor force as if to prove the legitimacy of Douglas-Arisawa's law, a classical framework for explaining married women's allocation of labor and housework. This law, however, could not explain the married women's behavior of today. The purpose of this paper is to analyze how own /husbands' gender role attitudes affect the married women's decisions through probit / multinominal logit analysis. Micro-data from a couple-survey which was conducted by Rengo Soken in 1998 was used for this research. The major findings are as follows; 1) There were significant negative relations between women's gender role and their decisions on whether or not to enter the labor market, but there were only insignificant relations acknowledged on the part of their husbands. 2) The results of the probit analysis show that the potential of the married women for entering the labor market was decreased by about 5% of the mean figure where they stood against the ideas of “husband doing washings.”