company man

A male employee whose allegiance to his company or its management—or the interests thereof—takes precedence or priority over his own opinions or the interests of his fellow workers. It's no use trying to get his help in persuading the boss to increase worker safety—he's just a company man.

A male worker more loyal to management than to his fellow workers; also, one who informs on fellow employees. For example, He'll never join in a strike; he's a company man. Dating from the 1920s, a period of considerable labor unrest, this term uses company in the sense of "a business concern" and was often applied as a criticism by supporters of labor unions.