The US economy has had the highest sustained level of unemployment since the Great Depression of the 1930’s. One reason for this has been the significant increase in income inequality as there is a redistribution of income from low income families to high income families. When you consider the proportion of income that is spent by both groups you will find that the lower income groups consume a much greater percentage of the their income than their higher income counterparts. Therefore we take more consumption out of the economy with slower growth and ultimately a loss of jobs = higher unemployment. Here is a clip from Paul Solman of PBS.