1. A method for process and project management of a business on a computer system (1030), comprising the steps of: creating at least one process schema (101) said process schema modeling the execution sequence of activities comprised by said business as a directed graph, and creating a project schema (102) corresponding to said process schema said project schema modeling at least one task comprising a subset of said activities as a unit of work, and generating a process instance (103) derived from said process schema modeling a certain specimen of said business, generating a project instance (104) derived (114) from said process instance (103) and derived (113) from said project schema (102) and said project instance being an executable process and project management instance of said specimen of said business, and creating a work process object (1001) (WPO), said work process object (1001) (WPO) offering combined access to said process schema, to said project schema, to said process instance and to said project instance.