Unemployment occurs when people who are able and seeking work cannot find employment. It has various causes such as slow economic growth, population increases, and industrial changes. Effects of unemployment include increased poverty, exploitation of workers, and political instability. There are different types of unemployment including frictional, seasonal, structural, and disguised unemployment. Strategies to reduce unemployment involve using more labor-intensive technologies, investing in agriculture and industry, education and health programs, and promoting services and employment growth. Unemployment is a serious issue that negatively impacts individuals and economies.