The National Longitudinal Surveys (NLS) are a set of surveys conducted by the USDepartment of Labor's Bureau of Labor Statistics, designed to gather information at multiple points in time on significant life events of several population samples of US citizens, especially their labor market activities. The NLS' data has been an important tool since the 1970s for economists, sociologist, and other researchers. ... The United States Department of Labor is a Cabinet department of the United States government responsible for occupational safety, wage and hour standards, unemployment insurance benefits, re-employment services, and some economic statistics. ... The Bureau of Labor Statistics (BLS) is the unit of the United States Department of Labor which is the principal fact-finding agency for the U.S. government in the field of labor economics and statistics. ... Labour economics seeks to understand the functioning of the market for labour. ... U.S. Economic Calendar Economics at the Open Directory Project Economics textbooks on Wikibooks The Economists Economics A-Z Institutions and organizations Bureau of Labor Statistics - from the American Labor Department Center for Economic and Policy Research (USA) National Bureau of Economic Research (USA) - Economics material from the organization... Jump to: navigation, search Social interactions of people and their consequences are the subject of sociology studies. ...