idler

bum do-nothing layabout loafer

nonworker

clock watcher couch potato dallier dawdler daydreamer dillydallier dilly-dallier drone goldbrick good-for-naught good-for-nothing goof-off laggard lagger lazybones lie-abed loon lounger mope ne''er-do-well no-account poke shirker slacker slug slugabed sluggard spiv sunbather trailer trifler whittler woolgatherer