mother hen vs worker

mother hen and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
mother hen	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of mother hen; that is, worker is a word with a broader meaning than mother hen:

mother hen: a person who cares for the needs of others (especially in an overprotective or interfering way)
worker: a person who acts and gets things done

Other hypernyms of mother hen include actor, doer.

mother hen (noun)	worker (noun)
a hen with chicks	sterile member of a colony of social insects that forages for food and cares for the larvae
a person who cares for the needs of others (especially in an overprotective or interfering way)	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done