This present research has the purpose to analyze the Itaú Unibanco Bank employees’ reactions and perceptions after the integration period. First, it is presents the main contributions of change management authors. It is specified the theoretical about individual, team and organization changing. It is then shown the importance of organizational culture in a company’s merger. After applying the search method as described, are emphasized and discussed the results. It is always presents an association between the collected data and theory. In the results, it is manifest that there is no homogeneity in Itaú Unibanco Bank employees’ reactions and behavior after banks integration process.
