This report compares work history of welfare recipients to that of nonrecipients. Data from the National Longitudinal Survey of Youth were used to construct complete employment and welfare histories for a cohort of women from the time they turn age 19 through the year in which they turn 27. A dynamic model predicts women's movement in and out of the labor market over the time period. This provides a means of predicting how much more women who ever receive welfare would have worked had they followed the same employment paths as women with similar characteristics who never turned to welfare.