Bachelor, U. Notre Dame, 1973. Department of Administration and Management, University of Chicago, 1975, Doctor of Philosophy, 1977.
Instructor, assistant professor Princeton University, New Jersey, 1976-1979. Assistant professor University Chicago, 1979-1982, associate professor econometrics and industrial relations, 1982-1985. Research associate London School of Economics, 1979, National Opinion Research Center, Chicago, 1979-1985, National Bureau Economic Research, Cambridge, Massachusetts, since 1983.
Edmund Ezra Day professor industrial and labor relations Cornell University, Ithaca, New York, since 1987. Distinguished senior research fellow United States Census Bureau, since 1998.
Member American Economics Association, Econometric Society, American Statistical Association.
Married Janet Mary Cullen, August 25, 1979. Children: Katherine, Maryclaire, Daniel.