This paper defines a model-driven approach for organizational engineering in which user interfaces of information systems are derived from business processes. This approach consists of four steps: business process modeling in the context of organizational engineering, task model derivation from the business process model, task refinement, and user interface model derivation from the task model. Each step contributes to specify and refine mappings between the source and the target model. In this way, each model modification could be adequately propagated in the rest of the chain. By applying this model-driven approach, the user interfaces of the information systems are directly meeting the requirements of the business processes and are no longer decoupled from them. This approach has been validated on a case study in a large bank-insurance company.Business process modeling, model driven engineering, modeldriven user interface development, usability, user interface extensible markup language.

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Abstract. User centered design would benefit from a dedicated environment, where the designer can focus on the application domain. Our current main domain is design for adult learning. We show how user centered interaction design may require a flexibility that often is not supported in commercially available digital learning environments. Based on design ideas that emerged during observing our students, supporting their needs for learning resources and our actual teaching we developed prototype learning facilities that fit the ''human size''.