After the terrorist attacks of September 11, 2001, questions of safety management and responsibility became topical to a high degree. The notion of individual responsibility is, also for institutional and corporate decisions and enterprises, of particular importance for technology. Problems of collective and corporate responsibility are becoming and still will become even more topical. Engineering ethics codes should be developed, improved, and operationally implemented. Rules of priority outlined here for handling responsibility conflicts must be elaborated much further. This seems necessary to meet the ideal requirements of social responsibility for technology in society. © 2003 Wiley Periodicals, Inc. Hum Factors Man 13: 203–222, 2003.