We analyze the effects of substitutability of social incentives on the labor supply of gigworkers (N=944) in a natural field experiment. In our treatments, we vary the proportion of the worker's wage that is donated to a social cause. Our experimental design allows us to observe the decision to...

This paper analyzes the impact of the German autobahn net on the economic performance of German regions. To address endogeneity and reverse causation problems, we use historical instrument variables, i.e. a plan of the railroad net in 1890 and a plan of the autobahn net in 1937. We find a...

We study whether commuting barriers constrain women's labor supply in urban Pakistan. We randomize offers of gender-segregated or mixed-gender commuting services at varying prices. Women-only transport more than doubles job application rates, while mixed-gender transport has minimal effects on...

In this paper we study the joint decision process of changing the structure of jobs and laying off individual workers in a firm that downsizes its workforce. A hierarchical decision model is proposed and estimated using personnel data from a firm in demise comparing the characteristics of the...

We test how a reduction in travel cost affects the rate and direction of scientific research. Using a fine-grained, scientist-level dataset within chemistry (1991-2012), we find that after Southwest Airlines enters a new route, scientific collaboration increases by 50%, an effect that is...

Nowcasting has been a challenge in the recent economic crisis. We introduce the Toll Index, a new monthly indicator for business cycle forecasting and demonstrate its relevance using German data. The index measures the monthly transportation activity performed by heavy transport vehicles across...

Using CPS data for the period 1979-2009, the wage dispersion of truck drivers (and subsets of the truck driving sample) is compared to the trends in wage dispersion of males economy-wide. We find that truckers' wages experienced a decrease in inequality post-deregulation, as expected given the...

Employee referrals are a very common means by which firms hire new workers. Past work suggests that workers hired via referrals often perform better than non-referred workers, but we have little understanding as to why. In this paper, we demonstrate that this is primarily because referrals allow...

Using evidence from recent work on truckers and disaggregated older data prior researchers did not have, we revisit a classic topic and find some new answers. We focus on differentials in average annual earnings at the firm level among mileage-paid over-the-road tractor-trailer drivers ("road...