Article aims to test manager´s behavior and response towards business environment. The study develops ideas how to extend current management theory by behavioral approach. Research method is based on in-depth empirical qualitative analysis, results are subject of quantitative verification by statistical methods which allows more perfect results. Research proceeds inductively, it means that new knowledge is generated as outcome and matched to theories. Manger´s decisions are examined as a response towards business environment components, correlations and significances between active or passive manager´s behavior are demonstrated. Proactive managerial approach is characterized by frequent change and diversification in suppliers, customers, human resources and product portfolio. As conclusion, managerial response can be interpreted as a product of manager´s activity, personal preferences and abilities. The re-orientation towards recognition of active or passive behavior is developed and matched towards current theories. It can be assumed, that the current scientific discussion is potentially relevant in seeking to explain the role of individual manager. In summary, the analysis and the outcomes have proved managers´ exceptional flexibility in counteracting actively the shortcomings of external context.