This paper assesses the costs of internal trade barriers and proposes policies to improve internal trade. Estimates suggest that complete liberalization of internal trade in goods can increase GDP per capita by about 4 percent and reallocate employment towards provinces that experience large...

Agriculture in poor countries has low productivity, high employment, and negligible trade flows relative to other sectors. These facts motivate a multi-sector, open-economy view of international productivity differences. With a quantitative multi-country model featuring nonhomothetic...

Does trade within a country affect welfare and productivity? What are the magnitude and consequences of costs to such trade? To answer these questions, we exploit unique Canadian data to measure internal trade costs in a variety of ways – they are large, and vary across sectors and...

Firm-level idiosyncratic policy distortions misallocate resources between firms, lowering aggregate productivity. Many environmental policies create such distortions; in particular, output-based intensity standards (which limit firms' energy use or emissions per unit of output) are easier for...

Disclosure programs exist in many industries in which consumers are poorly informed about product quality. We study a disclosure program for airline on-time performance, which ranks airlines based on the fraction of their flights that arrive less than 15 minutes late. The program creates...

Poor countries have low labour productivity in agriculture relative to other sectors, yet predominantly consume domestically produced food. The existing literature on cross-country agricultural and aggregate productivity differences abstracts from open economy considerations – leaving open the...

Regional income inequality within countries is an important contributor to global inequality. I investigate its relationship to economic growth using the US experience since 1880. I modify a multi-sector general equilibrium growth model and highlight two important forces: (1) structural change,...

Regional income inequality within countries is an important contributor to global income inequality. I investigate its relationship with structural change and growth using the historical experience of the United States since 1880. Specifically, I modify an existing multi-sector general...