SAG-AFTRA found Kip Pardue, 43, guilty of 'serious misconduct in violation' of the acting guild's constitution.
Former co-star Sarah Scott, 35, last year accused Pardue of inappropriate behavior on set of TV pilot Mogulettes.
She claimed Pardue placed her hand on his erect penis during a scene, then masturbated in front of her.
Another actress, Andrea Bogart, later accused Pardue of masturbating in front of her during filming of Showtime's Ray Donovan in 2014.
Pardue said through his attorney that he 'never engaged in any non-consensual behavior'.