Unemployment is the percent of the labor force that is looking for a job, but cannot find one. It is split into three types: functional, cyclical, and structural. Functional is when a person, who has the skills to get a job, but chooses not to work. Structural unemployment is when the economy has evolved past the point when a certain skill set is useful. An example of this is there is no longer need for switchboard operators, because technology has made that job obsolete. Cyclical unemployment is job loss that is generated by the business cycle. This could be because of seasonal factors, such as winter suppressing construction jobs. Cyclical unemployment is the form of unemployment that the government is most concerned about. This is because job loss from the business cycle, in theory, should be avoidable; it is also the largest percent of the unemployed. Job loss from the business cycle can indicate a coming recession; this is due to the relationship between investment and economic expansion. According to the Solow Growth model, economies are driven by capital (investment) accumulation. We can also add our knowledge that business is driven by investments. With these two postulates combined we can work backwards from this and come to the proof that when the investment in the economy decreases so will the amount of employment by businesses. So if the government starts to see a rise in the unemployment rate, this may signal a decrease in the capital in the economy and a coming economic crisis. An interesting aspect about the unemployment metric is that in the United States it is collected in a fairly poor manner. The government simply calls a random assortment of people and asked them if they are employed, what is doesn’t show is if people are underemployed.