First, in the United States, economists derive the data of unemployment from the various state workforce commissions. Once unemployed, citizens report to a state's workforce commission (typically there are several locations within a state); these citizens become a statistic in the unemployment database. Second, the types of unemployment that the Bureau of Labor Statistics collects to determine the unemployment rate is comprised of people who are frictionally unemployed (citizens between jobs) as well as people who are structurally unemployed (citizens whose jobs have become obsolete). This data collectively goes into the unemployment rate formula.
With regards to the formula used to determine the unemployment rate and the amount of money an economy loses because of unemployment, the following is the process that economists use in their calculations.
The labor force is the combined total of all unemployed people who are actively seeking employment and all the people who are actually working. The coefficient of this calculation gives us the unemployment rate times 100. The unemployment rate formula is the following: Unemployment (UE) rate = UE / Labor Force (LF) x 100. The index for unemployment is 4.5 percent, which indicates a healthy unemployment rate. If the unemployment calculations are less than 4.5 percent, this is great for an economy! However, if the data exceeds 4.5 percent, then we begin to experience a high rate of unemployment.
High unemployment rates are often correlated with recessions. When an economy has a high rate of unemployment, it loses money or its GDP shrinks. This loss is measured by the difference of the natural unemployment rate, which is also referred to as full employment at 4.5 percent. When economists subtract the natural rate of unemployment from the actual rate of unemployment, for example, nine percent, this is an indication that there is a negative GDP gap of -4.5 percent.
Additionally, there is a constant two percent that is multiplied times the -4.5 percent. This measurement indicates a .09 percent negative GDP gap. The .09 percent data is a measurement of the number of people who are unemployed and is referred to as a negative percentage in the GDP gap. After this .095 is determined (measurement of the GDP gap), this data is computed, 09% times the $14 billion of a given country. Please note the following example. Let us say that the potential GDP of a given country is $14 billion; therefore, $14 billion times .09 percent will equal $1.26 billion. What this means is that this country's economy due to unemployment in the GPD gap has lost $1.26 billion due to unemployment. One might think that unemployment in an economy is as horrific as inflation.
Source: Saylor Academy
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