worker (noun)
1: a person who works at a specific occupation; "he is a good worker" [ant: nonworker]
2: a member of the working class (not necessarily employed); "workers of the world--unite!" [syn: proletarian, prole]
3: sterile member of a colony of social insects that forages for food and cares for the larvae
4: a person who acts and gets things done; "he's a principal actor in this affair"; "when you want something done get a doer"; "he's a miracle worker" [syn: actor, doer]