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Working Paper
Entry, exit, and the determinants of market structure
This paper estimates a dynamic, structural model of entry and exit in an oligopolistic industry and uses it to quantify the determinants of market structure and long-run firm values for two U.S. service industries, dentists and chiropractors. Entry costs faced by potential entrants, fixed costs faced by incumbent producers, and the toughness of short-run price competition are all found to be important determinants of long-run firm values, firm turnover, and market structure. Estimates for the dentist industry allow the entry cost to differ for geographic markets that were designated as Health ...
Report
Working Remotely? Selection, Treatment, and the Market for Remote Work
How does remote work affect productivity and how productive are workers who choose remote jobs? We estimate both effects in a U.S. Fortune 500 firm’s call centers that employed both remote and on-site workers in the same jobs. Prior to COVID-19, remote workers answered 12 percent fewer calls per hour than on-site workers. When the call centers closed due to COVID-19, the productivity of formerly on-site workers declined by 4 percent relative to already-remote workers, indicating that a third of the initial gap was due to a negative treatment effect of remote work. Yet an 8 percent ...