What is White-collar Worker?

Legal Definition
In many countries (such as Australia, Canada, New Zealand, United Kingdom, Denmark or the United States), a white-collar worker is a person who performs professional, managerial, or administrative work. White-collar work is performed in an office, cubicle, or other administrative setting. Other types of work are those of a blue-collar worker, whose job requires manual labor and a pink-collar worker, whose labor is related to customer interaction, entertainment, sales, or other service-oriented work. Many occupations blend blue, white and pink (service) industry categorizations.
-- Wikipedia