- employee; person who works, with others, in a particular business
- assistant; person who assists another person in a business
Mitarbeiter is a semantic false friend of English coworker: although it is made up of elements that mean "co-" and "worker", Mitarbeiter means "employee", not quite "coworker" (which in German is Kollege).
Declension of Mitarbeiter
- Mitarbeiter in Duden online