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In the present research, age and sex population structures are introduced as the long-term effective factors on Economic Participation Rate. To explain long-term agents, the concept of Potentially Active Population source is defined and the quantity of the rate changes in the past years is investigated. These factors on the one hand include population structures and its components on the other hand include non-population structures such as cultural, social and finally economic factors. According to emphasize on the Economic Participation Rate and effective factors on this rate and it's future changes, the factors are divided into long-term, mid-term and short-term.
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In addition, changes of the population rate and the country Potentially Active Population in 10 years and later are studied. In this Paper, Economic Participation Rate from 1956 to summer 2014 is investigated.
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