In this paper a general equilibrium model is constructed to explain the emergence of firms and change in firm size by the tradeoff between economies of specialization and transaction cost. We show that firms emerge from the development of division of labor if the transaction efficiency for labor...

It is often believed that spouses’ wages are positively related even when other traits such as age and education are controlled. This is mainly based on the observation of two-earner couples. This paper uses the standard sample selection technique to correct for the sample censoring and to...

The paper provides some empirical evidence for the relationship between average firm size and the relative transaction efficiency and per capita income as hypothesized by Liu and Yang in Journal of Economic Behavior and Organization 42(2) (2000):145-65. The empirical data of 11 industries in...

This paper analyzes the heterogeneity effect of immigration on earnings in-equality by decomposing the aggregate measure of total inequality. The analysis shows that a substantial portion of an increase in measured inequality could be due to shifts in shares of heterogeneous population groups...