We investigate the effects of broad-based work incentives on female crime by exploiting the welfare reform legislation of the 1990s, which dramatically increased employment among women at risk for relying on cash assistance. We find that welfare reform decreased female property crime arrests by 4-5%, but did not affect other types of crimes. The effects appear to be stronger in states with lower welfare benefits and higher earnings disregards, and in states with larger caseload declines. The findings point to broad-based work incentives-and, by inference, employment-as a key determinant of female property crime. Although crime is predominantly a male activity and the propensity to engage in crime is much higher for males than for females with similar characteristics, females account for a nontrivial proportion of arrests in the U.S. In 2011, females accounted for over 37% of arrests for serious felony property crimes (burglary, larceny/theft, motor vehicle theft and arson) and almost one fifth of arrests for the violent crimes of murder, manslaughter, rape, and felonious assault In a recent comprehensive review, Bushway (2011) concluded that although there is a fair amount of evidence that crime is related to employment-related factors, the large-scale policy shift of welfare reform could potentially be leveraged to clarify the connections. Another advantage to exploiting the welfare reform legislation in this way-not discussed by Bushwayis that it would add to the almost non-existent literature on employment and crime among women.Very few population-based studies have specifically focused on determinants of female crime, with the most noteworthy analyses having been conducted over 25 years ago. Bartel (1979) examined female arrests using a cross-section of states in 1970. She found that deterrence variables were associated with arrest rates in the expected direction, and that marriage and labor force participation rates, particularly of single women, were positively associated with arrest rates for property crime. Phillips and Votey (1987) found that unemployment rates appeared to be important in explaining increases in arrest rates of women between 1952 and 1979. Although these studies were ground-breaking, labor force participation of women has increased, marriage has decreased, female headship has increased, and birth rates have decreased over the past half In this paper, we exploit welfare reform of the 1990s-a large-scale social experiment in the U.S. that dramatically increased employment among women at risk for relying on public cash assistance (i.e., generally, those with low human capital)-to investigate the effects of work incentives on female crime. Exploiting changes in the implementation of welfare reform across states and over time, we estimate the causal effects of the "work first" regime on adult women's arrests from 1992 to 2002, the period during which welfare reform unfolded. We consider several different types of crime and investigate the extent to which the effects are stronger in s...