In addition, the work tasks have blurred. "White-collar" employees may perform "blue-collar" tasks (or vice versa). An example would be a restaurant manager who may wear more formal clothing yet still assist with cooking food or taking customers' orders or a construction worker who also performs desk work. See also Designation of workers by collar color Knowledge worker White-collar crime Salaryman Notes Further reading Mills, Charles Wright. White Collar: the American Middle Classes, in series, Galaxy Book[s]. New York: Oxford University Press, 1956. N.B.: "First published [in] 1951." External links 1930s neologisms Employment classifications Office work Social classes