This article covers some of the answers that has received the question: What is a work?, from the Information Science, and from other disciplines. While it is an issue that has always been present in all these areas, it is since the arrival of IFLA FRBR model that the need for a clear answer has been pressing both to resolve practical problems -the cataloging of works- as theoretical also, i.e., the definition of work. We start with the definitions given by IFLA and other authors who have analyzed the FRBR model to demonstrate certain theoretical limitations in light of some texts produced from other knowledges such as sociology of art, semiotics, aesthetics of receptions and culture history. The article concludes that it is necessary to address a multidisciplinary study of the problem, in order to avoid errors in both theory and practice resulting from the application of the new model
