This major work provides a coherent and essential reference for researchers and students seeking to understand complexity approaches to organization studies. The four-volume set brings together a comprehensive collection of groundbreaking and significant articles from an emerging research field which has seen a strong growing and expanding interest in many knowledge areas of social and human sciences in the last two decades. The set includes explorations and critique of the scientific and philosophical foundations, as well as theoretical and methodological orientations of complexity to organizational issues. In addition, it contains a large number of articles on practical implications and applications of complexity thinking in important areas of organization studies, such as leadership, organizational development, strategy and innovation. The sets' articles have been selected by renowned editors in the field, with the support of an international advisory board.