The aim of this elaboration is to recognize trends in management of multiple economic entities. The attention was focused on centralized and decentralized management system. This study has a theoretical and empirical character. It is based on the literature studies and the results of researches obtained by the representatives of the scientific community over the past ten years in centralization/decentralization of management in complex economic units. In addition, there are included the latest findings concerning the discussed issue in the mining industry, made by the author of the study. The elaboration demonstrates that the flexibility of the organizational structures of multiple economic entities is diversified and depends on the type of multiple organization. The more flexible structure, the greater tendency to decentralize management. There is also an attempt to define current trends in management of multiple organizations. The study also tries to answer the following research questions: in what direction heads the management of the complex economic units, so-called multiple economic entities? whether there is a tendency for centralization or decentralization of management? whether internal subsidiaries are carrying out ever larger scope of organic functions and decision-making powers or whether it is limited for them? The elaboration ends with a resume and a bibliography.