Designation of workers by collar color

Collar color is a set of terms denoting groups of working individuals based on the colors of their collars worn at work. These can commonly reflect one's occupation within a broad class, or sometimes gender;^[1] at least in the late 20th and 21st century, these are generally metaphorical and not a description of typical present apparel. For the two terms of longest use, white-collar workers are named for the white-collared shirts that were fashionable among office workers in the early and mid-20th century. Blue-collar workers are referred to as such because in the early 20th century, they usually wore sturdy, inexpensive clothing that did not show dirt easily, such as blue denim or cambric shirts.

Various other "collar" descriptions exist as well, although none have received the kind of broad use in American English as the traditional white-collar/blue-collar distinction.