This paper proposes the Flexible Output Workflow Simulation system(FOWS), which enables to model and simulate a business process presented by the workflow model and to freely output optional criteria data evaluating the process with minimal setup effort. The main features of FOWS are "the function of adding optional properties to nodes or work items" and "the function of linking FOWS with an extemal program out of FOWS". FOWS has been developed with Microsoft Visual C++. In order to demonstrate how easy it is to obtain certain criteria values with FOWS, a sample simulation with FOWS is shown. The existing business process was applied to FOWS, and the result of it shows the serviceability of FOWS.
workflow management system, discrete simulation, business process.