This document provides information on how to calculate the official unemployment rate. It explains that the labor force consists of the employed plus the unemployed in a country or region. Those not included in the labor force are stay-at-home parents, full-time students not looking for work, and retirees. If an unemployed person stops looking for work, they drop out of the labor force. It then gives a quick example of calculating the labor force and unemployment rate for the fictional country of Obamastan.