It is well-documented that, since at least the early twentieth century, U.S. income inequality has varied inversely with union density. But moving beyond this aggregate relationship has proven difficult, in part because of the absence of micro-level data on union membership prior to 1973. We...

There is now a substantial body of economic research that models the behavior of labor unions as maximization of a well defined objective function. This paper presents both a selective critical survey of this literature and a preliminary consideration of some important problems that have not...