a person or thing that works.

a laborer or employee

steel workers.

a person engaged in a particular field, activity, or cause

a worker in psychological research; a worker for the Republican party.

Entomology .

a member of a caste of sexually underdeveloped, nonreproductive bees, specialized to collect food and maintain the hive.

a similar member of a specialized caste of ants, termites, or wasps.

Printing . one of a set of electrotyped plates used to print from ( contrasted with molder ).

any of several rollers covered with card clothing that work in combination with the stripper rollers and the cylinder in the carding of fibers.

noun

unemployed , dabbler , dilettante , drone , idler , loafer , shirker , sluggard , truant

noun

artisan , blue collar , breadwinner , company person , craftsperson , employee , hand , help , laborer , nine-to-fiver , operative , peasant , proletarian , serf , slave , stiff , toiler , trader , tradesperson , wage earner , white collar , working person , working stiff , hireling , jobholder , roustabout , working girl , workingman , workingwoman , workman , workwoman , apprentice , artificer , commuter , craftsman , doer , handicraftsman , industrial , journeyman , mechanic , operator , peon , performer , scab