This volume contains a selection of papers from the First Workshop on Subject- Oriented Business Process Management (S-BPM ONE). Establishing a multi- and cross-disciplinary interchange of underyling and applied concepts, successful appli- tion studies, and innovative development ideas, the workshop emphasized the pro- tive realization of role- or actor-oriented modeling on the basis of exchanging m- sages when accomplishing tasks. The workshop was organized as a forum for the discussion of foundations, achievements, reflections, and further developments. In this way, its contributions not...