This paper examines the impact of roads on structural transformation and business composition theoretically and empirically. We develop a two-sector model of regional trade with endogenous firm entry that highlights two opposing forces. \textit{Ceteris paribus} lower trade costs in...

Policies aimed at raising agricultural productivity have been a centerpiece in the fight against global poverty. Their impacts are often measured using field or quasi-experiments that provide strong causal identification, but may be too small-scale to capture the general equilibrium (GE) effects...

Entitlement programs have become an increasing component of total government spending in the US over the last six decades. To some observers, this growth of the welfare state is excessive and unwarranted. To others, it is a welcome counter-acting force to the rapid increase in income inequality....

The safety nets in high-income countries before 1900 and in low-income countries today were based on savings and aid from extended family, friends, charities, churches, and small amounts from local governments. Mutual societies and eventually insurance companies offered insurance against lost...

Can participation in safety net programs have long-lasting negative effects across multiple generations? Prior work shows a 1993 Dutch disability insurance reform which tightened requirements and lowered benefits for participants resulted in better outcomes for their children. We study the third...

The inflow of refugees and their subsequent integration can be an important challenge for both the refugees themselves and the host society. Policy interventions can improve the lives and economic success of refugees and of their communities. In this paper, we review the socioeconomic...

Using data on U.S. state and federal taxes and transfers over a quarter century, we estimate a regression model that yields the marginal effect of any shift of market income share from one quintile to another on the entire post tax, post-transfer income distribution. We identify exogenous income...

We study fraud in the unemployment insurance (UI) system using a dataset of 35 million debit card transactions. We apply machine learning techniques to cluster cards corresponding to varying levels of suspicious or potentially fraudulent activity. We then conduct a difference-in-differences...

Two million Mexicans were granted lawful permanent residency in the U.S. under the Immigration Reform and Control Act of 1986 (IRCA). We find that occupation and program use variables in a prominent proxy for legal status poorly detect this event. A decade after legalization, the share of...

We examine the preferences of low-income households in Kenya over the structure of unconditional cash transfers. We find, first, that most prefer lumpier transfers, and many prefer delayed receipt--unlike the structures typical of safety-net programs, but consistent with evidence on the...