"This paper assesses the impact of work-related migration by males on the labor market behavior of females in Nepal. Using data from the 2004 Nepal household survey, the authors apply the Instrumental Variable Full Information Maximum Likelihood method to account for unobserved factors that could simultaneously affect males' decision to migrate and females' decision to participate in the labor market. The results indicate that male migration for work has a negative impact on the level of market work participation by the women left behind. The authors find evidence of substantial heterogeneity (based both on observable and unobservable characteristics) in the impact of male migration. The findings highlight the important gender dimension of the impact of predominantly male worker migration on the wellbeing of sending households. The authors argue that strategies for economic development in Nepal should take into account such gender aspects of the migration dynamics. "--World Bank web site.