This project explores the causes behind the recent decline in the Labor Force Participation (LFP) rate. The analysis examines the evolution of the LFP rate for different demographic groups to gauge the effect of demographic changes. An integral part of the project is an investigation of the flows of workers into and out of the labor force to determine whether the LFP rate has been declining because more workers are leaving or because fewer workers are entering the labor market. The project also studies the evolution of wages and finds that the decline in the LFP rate is often accompanied by a declining real wage, which is indicative of the relative importance of demand versus supply factors.