worker (noun)

a person who works at a specific occupation

"he is a good worker"

proletarian, prole, worker (noun)

a member of the working class (not necessarily employed)

"workers of the world--unite!"

worker (noun)

sterile member of a colony of social insects that forages for food and cares for the larvae

actor, doer, worker (noun)

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"

worker (Noun)

A person who performs labor for his living, especially manual labor.

worker (Noun)

A nonreproductive social insect, such as ant, bee, termite or wasp.

Worker

The working class (or labouring class) comprises those engaged in manual-labour occupations or industrial work, who are remunerated via waged or salaried contracts. Working-class occupations (see also "Designation of workers by collar colour") include blue-collar jobs, and most pink-collar jobs. Members of the working class rely exclusively upon earnings from wage labour; thus, according to more inclusive definitions, the category can include almost all of the working population of industrialized economies, as well as those employed in the urban areas (cities, towns, villages) of non-industrialized economies or in the rural workforce.