Abstract: A workflow system includes workflow defining portion for defining workflow information necessary for operating workflow job to be realized by a sequence of unit businesses for which a plurality of workers are involved, workflow operating and managing portion for managing progress of the workflow job according to workflow information defined by the workflow defining means and urging execution of the unit job, individual information managing portion for managing individual information relating to each worker involving each unit job, and workflow predicting and evaluating projection for obtaining the workflow information defined by the workflow defining means, progress information indicative of progress of job of the workflow job managed by the workflow operating and managing means, and individual information managed by the individual information managing means, and for predicting future progress of the workflow job.