labor-saving

from The Collaborative International Dictionary of English v.0.48

Labor-saving \La"bor-sav`ing\, a.
   Saving labor; adapted to supersede or diminish the labor of
   men; designed to replace or conserve human and especially
   manual labor; as, labor-saving machinery; labor-saving
   appliances[4]; labor-saving devices like washing machines.

   Syn: laborsaving.
        [1913 Webster + WordNet 1.5]