Firm heterogeneity and the allocation of resources across firms play a key role in determining aggregate productivity. Entry barriers and misallocation can substantially impact productivity, as evidenced in recent work. This article provides a unifying theoretical framework and a review of this...

Misallocation of resources across firms leads to lower aggregate productivity. In this paper, we provide new estimates of manufacturing productivity differences across countries and establish by how much they would be reduced if such misallocation were eliminated. Using World Bank survey data...