Professor Robert J. Lalonde, professor of economics at the Harris School of Public Policy at the University of Chicago, is writing a Council Special Report on job displacement and the experienced worker. In this report, Professor LaLonde examines evidence on the causes of job loss, both through trade, technological change, and other factors, and suggests policies for aiding workers most harmed by job displacement—long-tenured, displaced workers. The report outlines the merits of a wage insurance program that would supplement the earnings of long-tenured workers displaced by international trade and other factors. The report contends that without policies to aid the workers most adversely affected by job loss, public support for further economic liberalization will likely diminish.