It approaches the problem of harmonizing social protection objectives under the ICESCR with a State's international economic treaty obligations, from the designing and interpreting international treaty texts, up to the institutional monitoring and empirical analysis of ICESCR compliance. In examining public policy options, the book takes into account around five decades of States' implementation of social protection commitments under the ICESCR; its normative evolution through the UN Committee on Economic, Social and Cultural Rights, and the Committee's expanded fact-finding and adjudicative competences under the Optional Protocol to the ICESCR; as well as the critical, dialectical, and deliberative roles of diverse functional interpretive communities within international trade, finance, and investment law. Ultimately, the book shoes how States' ICESCR commitments operate as the normative foundation of their trade, finance, and investment decisions.