Her current research is focused on the human rights implications of domestic and extraterritorial corporate activity, state responsibility for corporate complicity in human rights violations, as well as the intersections between transnational corporate activity, human rights and international economic law. She is the co-author with Audrey Macklin of The Governance Gap: Extractive Industries, Human Rights, and the Home State Advantage (Routledge, 2014). She is also a co-author with J. Anthony VanDuzer and Graham Mayada of Integrating Sustainable Development into International Investment Agreements: A Guide for Developing Country Negotiators (Commonwealth Secretariat, 2013). Penelope teaches international human rights law, business organizations, public international law and a course on transnational corporations, human rights, international trade and investment law.