hireling
Hireling (noun) means a worker who is taken on for pay, often to do unpleasant jobs with little freedom to make their own decisions.
Etymology
Came into English via Middle English hirlyng, from Old English hȳrling ("hireling, employee"), from Proto-West Germanic *hūʀijuling. It is cognate with West Frisian hierling, Dutch huurling ("hireling, mercenary"), German Low German Hüürling, and German Heuerling. By surface analysis, it is hire + -ling.