EN
The subject of the article is the depreciation of an organization's human capital caused by employees' disloyalty, or, in other words, (transformation of) their attitudes. To some extent the study develops ideas presented in the book: "Employee Loyalty. From the Diagnosis of Employee Loyalty Types to Employee Relationship Management". In the article key notions, i.e. employee loyalty and its economic meaning, were defined. The specification of lost benefits / losses associated with employee disloyalty was made. Conditions, types and economic implications of loyalty risk were characterized. Sample directions of employee loyalty dynamics leading to the depreciation of human capital as well as intervention methods were presented. Additionally, the term "social depreciation" was suggested. It would refer to the dynamics of attitudes, unwanted from the point of view of the organisation, as well as to the dynamics of the values represented by employees. It was emphasized that, taking into account practical aspects, it is worth conducting further research, focused on methodological objectives, exploring the types of employee loyalty (listed basing on its internal mechanisms: trust, habit and involvement).