[6][7][8] It is usually calculated by using a survey data collection and the answers of certain people to the questions of the national agency for the economy and statistics of a country.
[9][10] Some countries also have statistical data about the number of employed people who are registered as taxpayer and have to pay compulsory social insurance payments to the national social insurance system of a country, which could be used to calculate an improved performance indicator of people employed compared to the total labor force.
[11] The employment-population ratio has not always been looked at for labor statistics and where specific areas are economically, but after the recent recession it has been given more attention worldwide, especially by economists.
Information is collected on their desire for and availability to take a job at the time of the CPS interview, jobsearch activity in the prior year, and reason for not looking for work in past 4-week period.
Having a high ratio means that an important proportion of the population in working age is employed, which in general will have positive effects on the GDP per capita.