Economic Definition of CIO. Defined.
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Term CIO Definition: The abbreviation for the Congress of Industrial Organizations, which was originally a collection of industrial unions established due to a rift among AFL members in 1938, this is now one half of the umbrella organization for labor unions in the United States (the CIO part of AFL-CIO). Industrial unions included in the CIO, were originally part of the AFL. However, because the AFL primarily represented skilled workers in craft unions, a rift among AFL members developed in 1938, resulting in the creation of the CIO. This rift was closed in 1955, when both joined together to form the AFL-CIO, which is the primary advocate for workers and labor unions in the United States.