Professor Jeffrey Grogger is the Irving Harris Professor in Urban Policy at the University of Chicago Harris School of Public Policy and an Associate of the Centre for Economic Performance. He has authored dozens of scholarly articles focusing on problems of low-income populations. An applied microeconomist, he has worked on issues including crime, education, migration, and various aspects of racial inequality. He is a leading authority on social insurance programs and on US welfare reform. He received a PhD in economics from the University of California, San Diego. Before joining Harris, he taught at the University of California, Los Angeles, and the University of California, Santa Barbara. He has served as a co-editor of the Journal of Human Resources, as Chair of the National Longitudinal Surveys Technical Review Committee, as a research associate for the National Bureau of Economic Research, and as a research fellow with the Institute for the Study of Labour.