The paper studies the effects of mass immigration from the former USSR to Israel in the 1990s on the employment of the native-born. The exogeneity and the size of this inflow make it a "natural experiment'' of macroeconomic proportions. An open-economy model is used to analyze this experience,...

This paper explores the determinants and stochastic properties of hiring at the aggregate, macroeconomic level. At the core of the analysis is a present value relation which defines the worker's "asset value" for the firm and determines optimal hiring. The paper validates this relation using...

We study environments where a production process is jointly shared by a finite group of agents. The social decision involves the determination of input contribution and output distribution. We define a competitive solution when there is decreasing returns-to-scale and show that it leads to a...

This paper evaluates the sources of transitory market power in the market for personal computer (PCs) during the late 1980s. Our analysis is motivated by the coexistence of low barriers to entry into the PC industry and high rates of innovative investment by a small number of PC manufacturers.