layabout(n = noun.person) bum, do-nothing, idler, loafer - person who does no work; "a lazy bum"
is a kind of nonworker
has particulars: clock watcher, couch potato, dallier, dilly-dallier, dillydallier, lounger, mope, dawdler, drone, laggard, lagger, poke, trailer, daydreamer, woolgatherer, goldbrick, good-for-naught, good-for-nothing, goof-off, ne'er-do-well, no-account, lazybones, lie-abed, slugabed, loon, shirker, slacker, slug, sluggard, spiv, sunbather, trifler, whittler

   A person who does no work. [WordNet 1.5]

layabout, n. a habitual loafer or idler.