Extra-role behavior describes behavior which benefits the organization, which is voluntarily and which goes beyond existing role expectations. Despite this distinct definition, the rapid growth of research has resulted in the development of numerous concepts, all having the same underlying idea and coincide in most of their consequences but were never considered in an overall view. Therefore, the purpose of this paper is to analyze the impact of extra-role behaviors on organizations, groups and individuals via a synthesis of the identified literature, composed of 94 studies. The gathered broad generalizations, called stylized facts, show that extra-role behavior and its constructs have a significant, positive influence on organizational performances and success and it is also benefiting individuals and groups showing such behavior. Only a negative effect on personal matters is indicated. In conclusion several directions for future research are mentioned.