Two main problems of the research were: 1. To assess if there is the connection between the comprehension of human nature and the choice of the management styles and 2. To assess the interconnection between different management styles The research included the following management styles: 1. Directive, 2. Participatory, 3. Task oriented, 4. People oriented and 5. Achievement oriented. The sample consisted of 134 persons: 52 high and middle managers and 82 workers from two organizations. Likert type scales were used to assess the types of management and the general comprehension of human nature. All scales had satisfactory internal consistency. There was the significant positive correlation between the comprehension of the human nature and the choice of participatory and people and achievement oriented management style while the significant negative correlation was noted for the task oriented management. The significant positive and negative correlations and the absence of correlation between the different management styles were the basis for the analysis of the problem: which management styles could be alternatively applied. They were also used as the test for the applicability of the situational management models.