A political miracle occurred when Germany was reunited, and at first glance an economic miracle has followed. Real incomes in the east have now reached the western level, and investment per capita has been much higher than in the west. However, every third deutschmark spent in the east has been...

Neglected, but significant, the long-run consequence of the minimum wage - which was made national policy in the United States in 1938 - is its stimulation of capital deepening. This took two forms. First, the engineered shortage of low-skill, low-paying jobs induced teenagers to invest in...

When wage contracts are relatively short-lived, rent sharing may reduce the incentives for investment since some of the returns to sunk capital are captured by workers. In this paper we use a matched worker-firm data set from the Veneto region of Italy that combines Social Security earnings...

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 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...

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 resource misallocation in a model where establishment-level...

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 to...

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...