Knowledge that Transforms

We analyze how the absence behavior of Italian public sector employees has been affected by a law, passed in June 2008, reducing sick leave compensation and increasing monitoring. We use micro data on 889 workers employed in public administration. We find that the employees’ probability of being absent diminishes and that the reduction is greater among employees suffering higher earnings losses. Employees are responsive to the monitoring intensity and to the announcement of policy changes. Females react more strongly. While the reform has increased the hazard of ending an absence spell for short durations, the hazard for long durations decreased.

In 1998 the Norwegian government introduced a program that increased parents’ incentives to stay home with children under the age of 3. Many eligible children had older siblings, and we investigate how this program affected the long-run educational outcomes of the older siblings. Using comprehensive administrative data, we estimate a difference-in-differences model that exploits differences in older siblings’ exposures to the program. We find a significant positive treatment effect on older siblings’ tenth-grade GPA, and this effect seems to be largely driven by mother’s reduced labor force participation and not by changes in family income or father’s labor force participation.

The two key predictions of hedonic wage theory are that there is a trade-off between wages and nonmonetary rewards and that the latter can be used as a sorting device by firms to attract and retain the kind of employees they desire. We use the vignettes method to estimate individuals’ willingness-to-pay for fringe benefits and job amenities. We find negative wage-fringe trade-offs, considerable heterogeneity in willingness-to-pay for fringe benefits, and signs of sorting.

The SEED schools, which combine a “No Excuses” charter model with a 5-day-a-week boarding program, are America’s only urban public boarding schools for the poor. We provide the first causal estimate of the impact of attending SEED schools on academic achievement, with the goal of understanding whether changing a student’s environment is an effective strategy to increase achievement among the poor. Using admission lotteries, we show that attending a SEED school increases achievement by 0.211 standard deviation in reading and 0.229 standard deviation in math per year. However, subgroup analyses show that the effects may be driven by female students.

This study examines changes in returns to formal education and cognitive skills over the past 20 years using the 1979 and 1997 waves of the National Longitudinal Survey of Youth. We show that cognitive skills had a 30%–50% larger effect on wages in the 1980s than in the 2000s. Returns to education were higher in the 2000s. These developments are not explained by changing distributions of workers’ observable characteristics or by changing labor market structure. We show that the decline in returns to ability can be attributed to differences in the growth rate of technology between the 1980s and 2000s.

We investigate how the interplay between manager and worker origin affects hiring patterns, job separations, and wages. Numerous specifications utilizing a longitudinal matched employer-employee database including 70,000 establishments consistently show that managers are substantially more likely to hire workers of their own origin. Workers who share an origin with their managers earn higher wages and have lower separation rates than dissimilar workers, but this pattern is driven by differences in unobserved worker characteristics. Our findings indicate that the sorting patterns are more likely to be explained by profit-maximizing concerns than by preference-based discrimination.

We use a within-subjects experiment with math and word tasks to show that relative performance feedback moves high-ability females toward more competitive forms of compensation, moves low-ability men toward less competitive forms, and eliminates gender differences in choices. We also examine females across the menstrual cycle and find that women in the high-hormone phase are more willing to compete than women in the low-hormone phase. There are no significant differences between choices after subjects receive feedback. Thus, biological differences lead to economically significant differences, but the impact of those differences can be lowered through relative performance information.

We estimate a dynamic learning model of college dropout, taking advantage of unique expectations data to greatly reduce our reliance on standard assumptions. Our simulations show that 45% of dropout in the first 2 years of college can be attributed to what students learn about their academic performance, with this type of learning playing a smaller role later in college. Poorly performing students tend to leave because staying is not worthwhile rather than because they are at risk of failing out of school. Poor performance substantially decreases the enjoyability of school and substantially influences beliefs about postcollege earnings.

Since the seminal work of Stigler in 1962, economists have recognized that information is costly to acquire and leads to “search frictions.” Growth in online search has lowered the cost of information acquisition. We analyze the expansion of the website Craigslist, which allows users to post job and housing ads. Exploiting the sharp geographic and temporal variation in the availability of online search induced by Craigslist, we produce three key findings: Craigslist significantly lowered classified job advertisements in newspapers, caused a significant reduction in the apartment and house rental vacancy rate, and had no effect on the unemployment rate.

This article analyzes the impact of five major expansions in maternity leave coverage in Germany on mothers’ labor market outcomes after childbirth. To identify the causal impact of the reforms, we use a difference-in-difference design that compares labor market outcomes of mothers who give birth shortly before and shortly after a change in maternity leave legislation in years of policy changes and years when no changes have taken place. Each expansion in leave coverage reduced mothers’ postbirth employment rates in the short run. The longer-run effects of the expansions on mothers’ postbirth labor market outcomes are, however, small.