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A member of the working class, especially manual laborers. The phrase refers to the collar of a laborer's typical uniform, in contrast to the "white collar" shirts that typically accompany formal dress. I come from a family of blue-collar workers, so I will always champion the common man's concerns. Blue-collar workers have always been an important part of our economy.
See also: worker
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.