We propose uncertainty shocks as a new shock that drives business cycles. First, we demonstrate that microeconomic uncertainty is robustly countercyclical, rising sharply during recessions, particularly during the Great Recession of 2007-2009. Second, we quantify the impact of time-varying...

What accounts for differences in output per capita and total factor productivity (TFP) across countries? Empirical evidence points to resource misallocation across heterogeneous production units as an important factor. We study misallocation in a general equilibrium model of establishment...

We formulate a version of the growth model in which production is carried out by heterogeneous plants and calibrate it to US data. In the context of this model we argue that differences in the allocation of resources across heterogeneous plants may be an important factor in accounting for...

We consider a tractable model of heterogeneous production units that features endogenous entry and productivity investment to assess the quantitative impact of policy distortions on aggregate output and establishment size. Relative to the standard factor misallocation framework, policy...

Keynes's “Grandchildren” essay famously predicted both a rapid increase in productivity and a sharp shrinkage of the workweek – to fifteen hours – over the century from 1930. Keynes was right (so far) about output per capita, but wrong about the workweek. The key reason is that he failed...

We survey and assess the literature on the positive and negative effects of ethnic diversity on economic policies and outcomes. Our focus is on both focus both cities in developed countries (the US) and villages in developing countries. We also consider the endogenous formation of political...

In this paper I examine the evolution of labor relations institutions during the initial phase of marketization in Poland, Hungary. and Czechoslovakia and develop a model of changing support for reforms during the transition to a market economy. I find surprising stability in labor institutions...

Eastern European countries have experienced sharp declines in real GDP since 1990. One of the reasons for this decline is the Soviet trade shock, deriving from the collapse of the CMEA and of traditional export markets in the Soviet Union. This paper is an attempt to quantify the magnitude of...

Firms in the same industry can differ in measured productivity by multiples of 3. Griliches (1957) suggests one explanation: the quality of inputs differs across firms. We add labor market history variables such as experience and firm and industry tenure, as well as general human capital...

This paper re-explores the relation between a country's level of wealth and the mix of products it exports. We argue that both are simultaneously determined by countries' capabilities i.e. by countries' productivity and quality levels for each good. Our theoretical setup has two features. (1)...