The authors propose a theoretic-multiple approach to modeling the enterprise’s human resources potential. They construct and discuss the classification and functionalhierarchical models of the enterprise’s personnel and substantiate feasibility of their application in HR management. The article dwells on the objectives system of an enterprise operation, the purposes tree of the personnel management is identified and discussed. It is shown that one of the third level purposes is creation and effective use of the specific tools of HR management and the composition of such a toolset is discussed. Methodology for evaluating employee’s potential and enterprise’s HR potential is presented and discussed.