Originally developed in the context of family therapy, system constellations are introduced using an organisational learning and system theoretical framework. Constellations are systemic group interventions using a spatial representation of the system elements. They correspond to deutero-learning processes and use higher-order systemic thinking. Several company cases are analysed where constellations were used to overcome organisational defensive routines of the participants of a change process. The analysis shows, how a certain set of systemic principles, which is identified, is at work in situations where organisational defensive routines block learning and prevent the creation of sustainable solutions. It is shown that system constellations can help organisations deal with complex management situations. The relationship to other organisational intervention methods is discussed and possible directions of future research are highlighted in connection with a brief review of the relevant scholarly literature. (Contains 2 tables and 3 notes.)