workingman vs employee

workingman and employee both are nouns.

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

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

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