This is the third volume in a series sponsored by the Faculty of Law in the University of Western Ontario as a forum for presentation of research in law and related social sciences. The primary object of the series is to promote collaboration between lawyers, social scientists, juristic philosophers, and others who are interested in exploring social values, processes, and institutions. The present volume is devoted to topics relating to the changing role of trade union activity in Canada. It includes a discussion of the regulatory function of law in industry; an examination of the problems of jurisdictional disputes in Ontario; an outline of the major aspects of labour legislation in Quebec; a study of the relation of criminal law to trade union activity in Canada; and an analysis of conciliation procedures in British Columbia. Comparative material is supplied in an article on the ramifications of a national wages policy in Britain. This volume also contains the concluding part of an article on international fisheries which appeared in the first volume of this series.