noun
A straightforward compound noun referring to a person employed in a factory.
彼は自動車工場の工場従業員として働いている。
He works as a factory worker at an automobile plant.
工員 is a more general term for 'factory worker' or 'industrial worker', while 工場従業員 explicitly specifies 'factory employee' and may sound slightly more formal or bureaucratic.
Compound of 工場 (factory) + 従業員 (employee).