Family and social policy, comparative welfare state, gender studies, workfamily reconciliation issues, childcare and elderly care policies.
International Academy of Comparative Law: Member, European Law Institute: Fellow, Global Jurist (Journal): Founding Editor, Common Core of European Private Law (Journal): General Editor, International University College of Turin: Academic Coordinator, Università degli studi di Torino, Dipartimento di Giurisprudenza: Professore Ordinario di Diritto Privato, University of California Hastings College of the Law: Distinguished Professor of Law and Alfred and Hanna Fromm Chair in International and Comparative Law.
- The Ecology of Law: Toward a Legal System in Tune with Nature and Community, Berrett-Koehler, 2015 (with Fritjof Capra)
- Future generations now! A commons-based analysis,” in in S. Bailey, G. Farrell & U.Mattei eds., Protecting Future Generations Through Commons, Council of Europe, Trends in Social Cohesion 26, Strasbourg 2014. Published also in French.
- Plunder: When the Rule of Law is Illegal, Wiley-Blackwell, 2008 (with Laura Nader)