I can kinda see the "white-collar" image, with formal dress shirts, but "blue-collar" is not intuitive to me, and Dictionary.com and Etymonline are not helpful as to the reason for the color choice. Does anyone know the reason for the color blue in "blue-collar"?
closed as general reference by Alenanno, Daniel, kiamlaluno, waiwai933♦ Jul 16 '11 at 17:52
This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information. If this question can be reworded to fit the rules in the help center, please edit the question.