We introduce a joint model of labor market search and firm size dynamics to explain the differential in labor market and productivity outcomes between the U.S. and the European Union. At the core, our model is a hybrid of the labor market search model by Mortensen and Pissarides (1994) and the...

In this paper I estimate unobserved labor-generated knowledge spillovers within and among six large macroeconomic sectors covering the totality of the US civilian economy from 1948 to 1991. Unobserved spillovers are identified by observed TFP changes measured using Dale Jorgenson’s...

In this paper, we study the decision to purchase life insurance as part of a lifecycle plan of consumption, savings, and labor supply. Households are subject to idiosyncratic risk in their labor productivity as well as the composition and size of their family, and respond by accumulating...

This paper incorporates fertility and altruism into the ``value of life'' framework. Two dimensions of fertility and altruism are important in evaluating life expectancy and health related gains. First, child mortality can be very important in determining welfare in a context where individuals...

Economies respond differently to aggregate shocks that reduce output. While some countries rapidly recover their pre-crisis trend, others stagnate. Recent studies provide empirical support for a connection between aggregate growth and plant dynamics through their effect on productivity: the...

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...

This paper applies the insights of the literature on idiosyncratic shocks to inividual labor productivity to the dynamics of plant-level total factor productivity. Recent work in I.O. has emphasized the importance of firm- and plant-level heterogeneity in total factor productivity. Most of the...

We propose an approximation method for analyzing Ericson and Pakes (1995)-style dynamic models of imperfect competition. We develop a simple algorithm for computing an ``oblivious equilibrium,'' in which each firm is assumed to make decisions based only on its own state and knowledge of the long...