Utilizing data from eight U.S. national General Social Surveys, this study demonstrates that women's psychological commitment to the labor force work role increased substantially over the past decade, even after controlling for changes in personal background traits and job characteristics. No substantial cohort effects are found, although increases in work commitment vary somewhat by age. Overall, the findings suggest the importance of period influences on women's increasing propensity toward labor force participation. Contrary to popular literature pronouncing the decline of the work ethic among men, the work commitment of male respondents of all ages remains largely unchanged. As a result, the subjective labor force commitment of men and women to employment has become comparable.