The gender pay gap is the average difference between a man's and a woman's remuneration.
Remuneration is the compensation that one receives in exchange for the work or services performed; not to be confused with giving, or donating, or the act of providing to.
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There are two distinct numbers regarding the pay gap: unadjusted versus adjusted pay gap which takes into account differences in hours worked, occupations chosen, education and job experience.
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For example, someone who takes time off will likely not earn as much as someone who does not take time off from work.
Factors like this contribute to lower yearly earnings for women, but when all external factors have been adjusted for, there still exists a gender pay gap in many situations.
Unadjusted pay gaps are much higher.
In the United States, for example the unadjusted average female's annual salary has commonly been cited as being 78% of the average male salary.
The World Economic Forum provides recent data from 2015 that evaluates the gender pay gap in 145 countries.
The World Economic Forum is a Swiss nonprofit foundation, based in Cologny, Geneva.
Their evaluations take into account economic participation and opportunity, educational attainment, health and survival, and political empowerment scores.
The term empowerment refers to measures designed to increase the degree of autonomy and self-determination in people and in communities in order to enable them to represent their interests in a responsible and self-determined way, acting on their own authority.
Educational attainment is a term commonly used by statisticians to refer to the highest degree of education an individual has completed as defined by the US Census Bureau Glossary.