An important class of active labor market policy has received little rigorous impact evaluation: immigration barriers intended to improve the terms of employment for domestic workers by deliberately shrinking the workforce. Recent advances in the theory of endogenous technical change suggest...

For decades, migration economics has stressed the effects of migration restrictions on income distribution in the host country. Recently the literature has taken a new direction by estimating the costs of migration restrictions to global economic efficiency. In contrast, a new strand of research...

Economists are increasingly using publicly shared data and code to check each other's work, an exercise often called ‘replication' testing. But this much-needed trend has not been accompanied by a consensus about what ‘replication' means. If a follow-up study does not ‘replicate' an...

The World Bank was founded to correct failures in international capital markets. That role has shifted over the past 70 years. Modern analyses should proceed from the premise that the Bank's central goal is and should be to reduce extreme poverty. We show that the vast majority of donor...

An influential strand of research has tested for the effects of immigration on natives' wages and employment using exogenous refugee supply shocks as natural experiments. Several studies have reached conflicting conclusions about the effects of noted refugee waves such as the Mariel Boatlift in...

A recent surge in child migration to the United States from Honduras, El Salvador, and Guatemala has occurred in the context of high rates of regional violence. But little quantitative evidence exists on the causal relationship between violence and international emigration in this or any other...

Large international differences in the price of labor can be sustained by differences between workers, or by natural and policy barriers to worker mobility. We use migrant selection theory and evidence to place lower bounds on the ad valorem equivalent of labor mobility barriers to the United...

Labor markets are increasingly global. Overseas work can enrich households but also split them geographically, with ambiguous net effects on decisions about work, investment, and education. These net effects, and their mechanisms, are poorly understood. We study a policy discontinuity in the...

Developing countries invest in training skilled workers and can lose part of their investment if those workers emigrate. One response is for the destination countries to design ways to participate in financing skilled emigrants' training before they migrate — linking skill creation and skill...

While measured remittances by migrant workers have soared in recent years, macroeconomic studies have difficulty detecting their effect on economic growth. We review existing explanations for this puzzle and propose three new ones. First, we offer evidence that a large majority of the recent...