Is your Labor Economics course covering the most up-to-date material? Let these updates to Borjas 4/e serve as a checklist for your course: New policy applications and descriptions of state-of-the-art research studies, New examples and applications involving labor markets or policy shifts outside of the U.S., New discussion on the impact of the surge in Internet job search activities by both firms and workers, A thorough rewriting and reorganization of the material on immigration, Updated discussion of changes in the U.S. wage structure, New analysis on the impact of welfare reform legislation on labor supply, New discussion on the experimental approach that some recent studies use to measure the amount of discrimination in the labor market. Book jacket.