Do men and women differ in the extent to which they work beyond the level required by their jobs? Does this gender difference vary across national contexts? The authors answer these questions using survey data from the United States and Britain. Multivariate ordered logistic regression models reveal no gender difference in self-reported discretionary effort in the United States, but greater discretionary effort among women in Britain, net of individual, family, and workplace characteristics. The authors attribute these findings to a greater divergence of women's and men's labor force participation and careers, historically weaker regulation of workplace equality, and a sharper differentiation of gender roles in Britain than in the United States. They conclude by discussing the relevance of national context for shaping gender differences in work orientations and behaviors.Keywords discretionary work effort, gender, cultural schemas, national context As women increasingly enter a wide range of occupations and workplace settings, and as employers intensify their search for new ways to harness workers' motivation and energy, considerable research attention has focused on examining gender differences in orientations to work. This theme has