This is an HKS elective course I developed on the economics of the safety net -- including welfare programs, social insurance, early childhood interventions, health insurance, and housing. These programs comprise the largest share of government spending in the U.S. and other developed countries. Making them work well is a key economic and social priority. This course studies policy institutions and economic principles related to safety net programs via a combination of lectures and discussions of current policy issues. It devotes special attention to reform ideas and debates,...