The Selected Papers in this volume, written over a period of some 20 years, represent just a small part of Marco Biagi's scientific writings, and are reprinted here with a view to showing the range, depth and originality of his research work. While many of his papers dealing with labour relations issues in the Italian context were published in Italian, Marco's long association with Johns Hopkins University and Dickinson College, along with his close links with the leading scholars in comparative labour law and industrial relations not just in the member states of the European Union, but also in many other countries, including Japan, were of fundamental importance for his work, and as a result he chose to publish many of his most thought-provoking papers in English. What emerges from a reading of these papers is the integrity and consistency of his thinking: themes that appear in his early work, such as industrial democracy, employee participation, training for flexibility, the role of small and medium-sized enterprises, and innovative strategies for creating new jobs and improving the quality of work, are further developed in the later years. He always wrote with a sharp eye on changes in the labour market arising from economic, social and political developments, such as most recently the introduction of the single currency, and always with a view to extending the benefits of employment opportunities beyond the existing limits. His ideas will continue to play an influential role in thinking about employment issues for many years to come.