Synonyms: assistant, helper, deputy, auxiliary
assistant: a person who helps someone as part of their job
Example: His assistant makes all his appointments.
helper: a person who helps someone do a particular job or task, especially without
Example: The children can be my helpers for the day.
deputy: a person who makes decisions when the manager or boss is away
Example: She’s acting as deputy while her department manager is in hospital.
a person who helps other workers
Example: He works as a nursing auxiliary in the local hospital.