Types of unemployment:Frictional Unemployment:-It refers to unemployment caused by changes in individual labour markets.This is the type of unemployment resulting from people who have left jobs that did not work out and are searching for new employment or people who are either entering or re-entering the labour force to search for a job.Structural Unemployment: This is unemployment resulting from changes in the pattern of demand for goods and services or changes in technology. These changes may in turn alter the structure of the total demand for labour rendering some particular skill less in demand or may become obsolete. The demand for other skills however may expand. Unemployment in this case is the result of the composition of the labour force which does not respond quickly to new structures of job opportunities.Cyclical Unemployment: This is the type of unemployment resulting from decline in real aggregate output in the economy. It can also be defined as unemployment caused by deficiency of aggregate or total spending. This is sometimes referred to as deficient-demand unemployment.