propertyless wage-earning working-class blue-collar

from The Collaborative International Dictionary of English v.0.48

low-class \low-class\ adj.
   1. Occupying the lowest socioeconomic position in a society.
      Contrasted with {middle-class} and {upper-class}.
      [Narrower terms: {propertyless, wage-earning,
      working-class, blue-collar}] Also See: {lowborn},
      {proletarian}, {propertyless}.

   Syn: lower-class (vs. upper-class).
        [WordNet 1.5]

   2. characteristic of the lower classes. [Narrower terms:
      {non-U, vulgar}] PJC]