Richard B. Freeman holds the Herbert Ascherman Chair in Economics at Harvard University. He is also director of the Labor Studies Program at the National Bureau of Economic Research, codirector of the Labor and Worklife Program at Harvard Law School, and a visiting professor at the London School of Economics. Joel Rogers is Professor of Law, Political Science, and Sociology at the University of Wisconsin-Madison. He is a contributing editor of The Nation and Boston Review and the director of COWS and the John R. Commons Center.