Skill intensive technologies seem to be adopted by rich countries rather than poor ones. Related to that observation, the ratio of wages of skilled to unskilled workers - the skill premium - shows two important features over time and across countries. In the US the skill premium decreased during...

In this paper I ask whether a model of ¯rm capital accumulation with entry and exit calibrated to match the investment regularities of U.S. establishments is capable of generating the dependence of ¯rm dynamics on size and age. Firms face uncertainty in the form of idiosyncratic productivity...