Why turkey has the same name as Turkey
also blue-collar, 1949, from blue (1) + collar (n.). From the common color of men's work shirts.
A descriptive term widely used for manual laborers, as opposed to white-collar for office workers.
Note: The term is often associated with conservative values.
Working-class: a blue-collar neighborhood/ blue-collar concerns
[1940s+; fr the color of the traditional workshirt]