The document discusses different types of unemployment including frictional, seasonal, structural, and cyclical unemployment. It provides unemployment rates from 2013-2017, with the highest rate in 2013 at 1.0% and the lowest in 2016 at 0.5%. Cyclical unemployment is impacted by declines in GDP according to Okun's law and can increase during economic downturns when GDP decreases. The document also lists several website URLs and their access dates between 2014-2017.