This book is the result of a study carried out on the Emotional Intelligence skills of nurses in the workplace. Reflecting and writing about the development of emotional competencies in nursing professionals recognizes the importance of the alliance between the disciplines of Nursing, Psychology and Human Resources Management. This text is divided into three parts. In the first part, a brief theoretical exposition is given, where we hope to provide a general understanding of what Emotional Intelligence is and the concepts associated with it, as well as presenting a measuring instrument. The second part summarizes the study carried out in an EPE Hospital in the north of Portugal, where you will find: the assumptions that underpinned the study; the methodological options; the development of the research and an Emotional Intelligence profile that corresponds to the perception of the nurses studied regarding their abilities. Finally, the contributions of this construct to the professional nursing context are presented, in terms of management, training and for the nurses themselves.