The organizational view on work systems focuses on the desired outcomes of work, while the emergent view focuses on how the work actually gets done. Often a gap exists between these two, because workers pursue individual objectives in addition to the organizational objectives. Agent-based simulations can be used to improve work practice and thereby organizational performance. Current modeling and simulation frameworks only represent either one of the two views. In order to model both views, we propose an integration of two modeling and simulation frameworks, OperA and Brahms. Using the integrated model, we are able to run simulations that show to what degree the actual work practice differs from the organizational objectives.