Abstract: A method of using a computer system to model work processes that allows access by multiple users and dynamic modification the work process model. The method defines a plurality of tasks that are completed in the course of completing the work process. For each of the tasks, a set of expected courses of action performed in completing the task is defined. For each of the expected courses of action, one or more obligations that must be fulfilled upon the performance of such expected courses of action are associated with the expected courses of action. The method also included associating obligations with the activation of one or more of other tasks. The method tracks the activation and completion of the tasks. After the activation and completion of the tasks begins, tasks, expectations and obligations may be modified or added.