Why do people behave in a certain way at work? What are their motivations? Is there a methodological approach that can be used to frame the different attitudes and actions taken by individuals within corporate organisations, in order to manage them in such a way as to foster situations of mutual benefit and synergy? The theoretical model of transactional analysis was created to answer questions such as these, i.e. to offer operational application to some of the main discoveries belonging to dynamic psychology and to the related mechanisms of functioning of our psyche. This operational manual explains how to better understand what motivations drive people to make decisions at work, what are the relative existential positions and how the constructive or destructive games that inevitably take place within companies develop. The ultimate aim is to provide not only practical tools for solving problematic and uncomfortable situations, but also a real means of empowerment for one's career and more generally for human resources management.