WordNet (r) 3.0 (2006):

wage earner
    n 1: someone who earn wages in return for their labor [syn:
         earner, wage earner]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "wage earner":
   blue-collar worker, breadwinner, casual, casual laborer,
   common laborer, day laborer, employee, factory worker, flunky,
   free lance, free-lancer, full-time worker, hand, industrial worker,
   jobber, jobholder, laborer, laboring man, menial, migrant, moiler,
   navvy, office temporary, proletarian, roustabout, salaried worker,
   self-employed person, servant, stiff, temporary, toiler,
   wage slave, wageworker, worker, workgirl, workhand, working girl,
   workingman, workingwoman, workman