The article discusses the relevance of the formation of staff loyalty in current conditions, and substantiates the personnel loyalty phenomenon. It also considers tripartite model of loyalty, which includes aff ective loyalty, loyalty due to length of service, normative loyalty. The article defi nes qualities of a loyal employee to ensure the eff ective functioning of the personnel management system. The paper alsoevidences factors contributing to staff loyalty to the organization: the social protection of workers, management transparency, humanity (no undue rigidity to workers by management) and corporate culture. Particular attention is paid to the disclosure of loyalty levels: loyalty of the trappings level, loyalty of the actions and behavior level, loyalty of the ability level, loyalty of the belief level, loyalty of the identity level. The author discusses ways of developing loyalty (diagnosis of staff loyalty level, group discussions, role-playing) and the impact of loyalty on labor productivity, the level of confl ict in the organization, communications and the organization as a whole.