This paper offers an alternative theory for the increase in unemployment and wage inequality experienced in the United States over the past two decades. In my model firms decide the composition of jobs and then match with skilled and unskilled workers. The demand for skills is endogenous and an...

We analyse an economy where managers engage both in the adoption of technologies from the world frontier and in innovation activities. The selection of high-skill managers is more important for innovation activities. As the economy approaches the technology frontier, selection becomes more...

During the nineteenth century, most Western societies extended voting rights, a decision that led to unprecedented redistributive programs. We argue that these political reforms can be viewed as strategic decisions by political elites to prevent widespread social unrest and revolution. Political...

We argue that inequality and rapid deunionization are related, and that skill-biased technical change has been an important factor in deunionization as well as in the rise in inequality. Skill-biased technical change causes deunionization because it increases the outside option of skilled...

This paper offers and tests a theory of training whereby workers do not pay for general training they receive. The crucial ingredient in our model is that the current employer has superior information about the worker’s ability relative to other firms. This informational advantage gives the...

This paper studies the conditions under which the scarcity of a factor (in particular, labor) encourages technological progress and technology adoption. In standard endogenous growth models, which feature a strong scale effect, an increase in the supply of labor encourages technological...

In this paper, I develop a model to analyze how skill premia differ over time and across countries, and use this model to study the impact of international trade on wage inequality. Skill premia are determined by technology and the relative supply of skills. An increase in the relative supply of...

In the standard model of human capital with perfect labor markets, workers pay for general training. When labor market frictions compress the structure of wages, firms may invest in the general skills of their employees. The reason is that the distortion in the wage structure turns...

This paper revisits and critically re-evaluates the widely-accepted modernization hypothesis which claims that per capita income causes the creation and the consolidation of democracy. We argue that existing studies find support for this hypothesis because they fail to control for the presence...

This paper shows that search in the labour market has important effects on accumulation decisions. In a labour market characterized by search, employment contracts are naturally incomplete and this creates a wedge between the rates of return and marginal products of both human and physical...