This paper focuses on the inscriptions from Dacia, which mention, by various terms, the occupations of private slaves. The epigraphic texts of Dacia mention slaves used by their masters for various administrative, financial or domestic duties, like actores, villici, dispensatores, vikarii and others. Three different ways of their involvement in different economic activities can be observed: they worked directly for their masters, they were assigned to actio institoria and they could hold a peculium. All these functions demonstrate that the servi privati were involved in public services as representatives of their masters.