Enterprise mashup (EM) is a new development paradigm which empowers users from the business units to create individual applications without the involvement of the IT department. Unlike the service-oriented architecture paradigm, which allows the automation of structured business processes, enterprise mashups represent a technology characterized by the peer production philosophy. It enables the automation of situational needs of knowledge workers which could not be modeled in advance and are typically not supported by available systems. An open and unaddressed question is the discussion of the benefits of this new paradigm. This paper closes this gap by designing a benefit model. By following the design science approach, we leverage the balance scorecard concept to structure and identify the benefits items from a holistic point of view. By means of a case study and an organized laboratory experiment, we demonstrate the applicability of the designed benefit model.