This paper describes a model of search unemployment in an economy with multi-worker firms. It combines competitive labor market search with the model of firm growth of Luttmer [2011]. In a baseline version, Gibrat's law holds approximately and aggregate shocks that destroy blueprint capital...

This paper describes a simple model of aggregate and firm growth based on the introduction of new goods. An incumbent firm can combine labor with blueprints for goods it already produces to develop new blueprints. Every worker in the economy is also a potential entrepreneur who can design a new...

This paper presents an analytically tractable model in which firm dynamics is driven by technology adoption and fixed costs. Existing firms experience idiosyncratic changes in technology. On average, the rate of technological progress among existing firms is slower than that of the frontier...