Search-and-matching models with on-the-job search and firm size yield the prediction that job-to-job flows reallocate workers from smaller to larger firms. Recent papers have extended such models to explain the cyclicality of employment at large vs. small firms. In this paper, we use linked...

In this paper we assess the role of reallocation of resources -- through shifts in market shares among incumbents as well as through firm entry and exit – to productivity. We are motivated by the evidence in all countries studied of heterogeneity of firms and substantial mobility of...

We use plant output and input prices to decompose the profit margin into four potential determinants of plant exit: productivity, demand shocks, mark-ups and input costs. We find that each of these market fundamentals are indeed important in explaining plant exit. Then, we use differences across...

Many studies using business-level microdata have documented large size average differences across plant ages. New businesses tend to be much smaller than their established industry competitors. This size gap also closes slowly, taking well over a decade on average. We show that even for...

Many theoretical models of labor market search imply a tight link between worker flows (hires and separations), vacancies, and job flows (employer-level employment growth) at the employer level. Using establishment data from multiple sources for the U.S., we show that hiring, quit, layoff, and...

Many studies using business-level microdata have documented large size average differences across plant ages. New businesses tend to be much smaller than their established industry competitors. This size gap also closes slowly, taking well over a decade on average. We show that even for...

There is a growing body of evidence suggesting that healthy, market economies exhibit both static and dynamic allocative efficiency, whereby more productive businesses have a larger market share and reallocation of outputs and inputs within sectors shifts resources from less to more productive...

Online appendix for the Review of Economic Dynamics article

We examine various channels through which trade liberalization affects aggregate productivity, exploiting tariff changes across sectors after the Colombian trade reform. An advantage of our analysis is that our TFP measure does not include demand and price effects. We find that higher...