This article shows how allowing for goods to be divisible at the point of consumption and incorporating productive heterogeneity lead to the emergence of middlemen in an equilibrium search environment. In the baseline model, middlemen are welfare reducing and their number increases as market...

This paper examines the role of commitment and advertising in the labor market for the determination of the levels of wages, human capital and physical capital. In a competitive search framework it is shown that when the characteristics of jobs or workers become common knowledge (so that the...