From 2007 to 2010, Chaisse was at the World Trade Institute in Switzerland to coordinate a project on multilateral rules on investment, as Alternate Leader of the NCCR-Trade Regulation's Individual Project 11. During this time, he also served as a Visiting Professor at the International Law Institute of Wuhan University School of Law in Wuhan, China, and co-authored a two-volume book titled Essays on the Future of the World Trade Organization, published in 2008. In 2009, Chaisse joined the newly established Faculty of Law at the Chinese University of Hong Kong, where he received the CUHK Research Excellence Award in 2012, and in 2013 become Director of the Centre for Financial Regulation and Economic Development. He received the CUHK Vice-Chancellor's Exemplary Teaching Award in 2015. Chaisse's experiences living in Asia and Switzerland, with their disparate conditions with respect to the availability of fresh water, led him to advocate for the development of "a global legal framework to oversee the business of supplying water, particularly across borders". Pursuant to this interest, Chaisse has advised various national governments in crafting water-investment contracts. Chaisse edited and contributed to the festschrift for Mitsuo Matsushita in 2016, including a chapter in the piece examining international economic laws potentially regulating State-Controlled Entities and Sovereign Wealth Funds, and highlighting "a considerable risk of incoherence" for their operations. Chaisse and Sufian Jusoh's 2016 book, The ASEAN Comprehensive Investment Agreement: The Regionalization of Laws and Policy on Foreign Investment, was positively reviewed in Foreign Trade Review, as was Chaisse, Jusoh, and Tomoko Ishikawa's 2017 book, Asia's Changing International Investment Regime: Sustainability, Regionalization, and Arbitration. In recognition of his important academic contribution to international law, Chaisse received the CUHK's Vice-Chancellor's Young Researcher Award 2017. In 2019, Chaisse joined the School of Law, City University of Hong Kong. In the 2020 Times Higher Education Law Rankings, City University of Hong Kong School of Law was ranked joint 25th in the world. Chaisse's 2019 book China's International Investment Strategy received important acclaims as "an invaluable contribution to our understanding of China's international investment law strategy across domestic, bilateral regional and global levels" and "a must-have for all who wish or need to understand China-related investment disputes. This will be for many years to come a major work for China scholars and practitioners alike"., he serves as co-editor-in-chief of the Asia Pacific Law Review.
Other activities
In addition to his teaching and writing, Chaisse sits on the Trade and Investment Council of the World Economic Forum, and various other international legal advisory bodies. Chaisse has noted the increasing use of Special Economic Zones to draw foreign investment to regions, and the potential for conflicts to arise from the divergence between the local management of these zones and their host countries, which are the recognized actors in international law. Chaisse is also member of the Internet Corporation for Assigned Names and Numbers in which he serves on the Working Group on gTLDs' rights protection mechanisms review and the Accountability and Transparency Review program. He contributed to the Initial Report of the Review of All Rights Protection Mechanisms in All gTLDs Policy Development Process released on 18 March 2020. In 2020, Chaisse addressed economic challenges of the COVID-19 pandemic, citing the lack of cooperation between countries as a core problem, contending that "as long as there is no cooperation among them to decide when to lift these controls, the effect on the economy will be felt for quite some time".
The ASEAN Comprehensive Investment Agreement: The Regionalization of Laws and Policy on Foreign Investment, was positively reviewed in Foreign Trade Review
International Investment Treaties and Arbitration Across Asia
Asia's Changing International Investment Regime: Sustainability, Regionalization, and Arbitration
The Regulation of Global Water Services Market
China's International Investment Strategy-- Bilateral, Regional, and Global Law and Policy
Sixty Years of European Integration and Global Power Shifts-- Perceptions, Interactions and Lessons