When people can self-insure via migration, they may have less need for informal risk sharing. At the same time, informal insurance may reduce the need to migrate. To understand the joint determination of migration and risk sharing I study a dynamic model of risk sharing with limited commitment...

Using data on formal manufacturing plants in India, we report a large but imprecise speedup in productivity growth starting in the early 1990s (e.g., 1993-2007 compared to 1980-1992). We trace it to productivity growth within large plants (200 workers or more), as opposed to reallocation across...

A potential benefit of a large market (GDP) is a large number of locally-produced varieties. We attempt to quantify the number of varieties produced in a market by counting the number of firms and plants. Looking at manufacturing industries across countries and over time, we find that variety...

Using data on formal manufacturing plants in India, we report a large but imprecise acceleration in productivity growth starting around the mid-1990s (e.g., 1993-2004 compared to 1980-1992). We trace the acceleration to productivity growth within large plants (200 workers or more), as opposed to...

Online appendix for the Review of Economic Dynamics article