In the present study, the Expert Mechanism on the Right to Development explores the current and future role of the right to development in international investment law, analyses the right to development in existing international investment law, explores the evolving role of investors as duty holders, examines the impact of two important recent legal developments, considers the role of amicus curiae and addresses the question of whether arbitrators should have a proven record of human rights expertise as a prerequisite of their appointment to adjudicate investment disputes. The report concludes with a series of recommendations and proposals.