The article substantiates the need to identify the moral foundations of the professional activities of an employee of the penitentiary system (penal system) in the context of the problem of spiritual renewal of society. The importance of non-institutional regulators of relations between people, which are morality and morality, is argued in the implementation of a valuable attitude towards a person by an employee of the penitentiary system. It is substantiated that moral values as personal meanings, as meanings, as relationships form the moral foundations of the activity of a penitentiary officer. The role of moral values as the moral foundations of the activities of a penitentiary officer in expanding the content of professional training of cadets of a departmental higher education institution of the Federal Penitentiary Service of Russia in terms of shaping the personality of a cadet who is able and ready to realize a value attitude towards another person both in professional activities and in life as a whole is revealed.