workman vs employee

workman and employee both are nouns.

Word	Noun	Adjective	Verb	Adverb
workman	Yes	No	No	No
employee	Yes	No	No	No

As nouns, employee is a hypernym of workman; that is, employee is a word with a broader meaning than workman:

workman (noun)	employee (noun)
an employee who performs manual or industrial labor	a worker who is hired to perform a job