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...

This paper focuses on the aggregate demand for electricity, natural gas, and light fuel oil in Canada as a whole and six of its provinces — Quebec, Ontario, Manitoba, Saskatchewan, Alberta, and British Columbia — in the residential, commercial, and industrial sectors. We employ the...

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...

Between 1915 and 1920, 18 U.S. states considered the introduction of compulsory health insurance. Given the alleged deficiencies of voluntary arrangements for insuring sickness, reformers expected social insurance to be welfare enhancing for American wage-workers since it would result in lower...

When agents make their choices simultaneously, network effects often give rise to a selection problem involving perfectly coordinated, Pareto-optimal equilibria. We characterize this selection problem, and introduce a generalized sequential choice model to address it. In this model, we show how...