: This contribution discusses the application of Petri nets for modeling workflow in healthcare based on a normative language approach. After a brief inon, a framework of different abstraction levels covering clinical workflow representation to workflow implementation is presented. In order to use the object Petri nets formalism for clinical workflow representation at the conceptual level of the framework, a healthcare specific net interpretation of these Petri nets is introduced which maps healthcare terms to formal object Petri net elements. 1 Motivation The application of Petri nets in healthcare has been conduced by a number of researches [GS04; Jø02]. However, the lack of an intuitive approach to Petri nets from the end-user perspective has been discussed as their major disadvantage [GrRo99]. This leads to difficulties to apply Petri nets at the conceptual modeling level where clinical workflows have to be designed and verified in cooperation with clinical personnel like practiti...