Richard Brun has filed the suit in Orange County, accusing Cage of firing him "without any valid reason."
TMZ reports that Cage hired Brun in September 2011, then fired him two weeks later without notice.
Brun is suing Cage for the dismissal and for refusing to pay him the salary promised in his contract.
He is seeking out a minimum of $115,000 (£70,858) in damages from the National Treasure star.
Cage, who is currently gearing up to star in the action movie I Am Wrath, has not yet commented on the suit.