Institutional overlap emerges not only as an unintended by-product of purposive state action but also as its deliberate result. In two ways, this article expands existing research on the causes and consequences of institutional overlap. First, we establish that three different types of dissatisfaction may lead states to deliberately create institutional overlap: dissatisfaction with substantive norms and rules, dissatisfaction with decision-making rules and dissatisfaction with the institutional fit of an existing governance arrangement for a given cooperation problem. Each type of dissatisfaction triggers a distinct motivation for the creation of institutional overlap: to induce policy change, to increase influence on collective decision-making or to enhance governance effectiveness. Second, we demonstrate that whereas the motivation to induce policy change leads to interface conflicts, the motivations to increase influence on collective decision-making and to enhance governance effectiveness give rise to inter-institutional coordination. Three empirical case studies on global energy governance, the governance of global development banking and global environmental governance probe these analytical claims.

This article interrogates the intellectual foundations of global legal pluralism as a descriptive and normative position, and assesses its core claims with reference to the changing status of individuals in the postnational realm. In order to uncover the normative core of the pluralist position, the article turns to the rich tradition of value pluralism in political philosophy, particularly as articulated by Isaiah Berlin. It argues that as a normative position, pluralism – whether applied to the abstract sphere of values or the concrete realm of legal regimes – is normatively underdetermined, offering too little guidance as to how the conflicts endemic to a pluralistic world ought to be resolved. Unless it is supplemented by other, more substantive principles of political legitimacy such as democracy, freedom, equality, or justice, the principle of pluralism applied to the global legal realm is poised to reproduce, even exacerbate, existing inequalities of power and resources among those whom it affects.

Global legal pluralism is concerned, inter alia, with the growing multiplicity of normative legal orders and the ways in which these different orders intersect and are accommodated with one another. The different means used for accommodation will have a critical bearing on how individuals fare within them. This article examines the recent environmental jurisprudence of the European Court of Human Rights to explore some of the means of reaching an accommodation between national legal orders and the European Convention. Certain types of accommodation – such as the margin of appreciation given to states by the Court – are well known. In essence, such mechanisms of legal pluralism raise a presumptive barrier which generally works for the state and against the individual rights-bearer. However, the principal focus of the current article is on a less well-known, recent set of pluralistic devices employed by the Court, which typically operate presumptively in the other direction, in favour of the individual. First, the Court looks to instances of breaches of domestic environmental law (albeit not in isolation); and second, it places an emphasis on whether domestic courts have ruled against the relevant activity. Where domestic standards have been breached or national courts have ruled against the state, then, presumptive weight is typically shifted towards the individual.

The multiplication of legal orders is characteristic of what one could call an age of globalization and counter-hegemonic globalization. In this age, the relationship between international law and other normative orders is increasingly important. The dominant disciplinary frameworks that provide explanations of such a relationship are focused on compliance with and/or the effectiveness of international norms in domestic legal orders and are derived from international relations. In this article, I examine the limits and possibilities of such approaches through a case study of the use of law (at multiple levels) by one of India's most prominent social movements, the Narmada Bachao Andolan (Save the Narmada). The article argues that the use of law by a social movement is a concrete instance of counter-hegemonic globalization in which international law is one of many different legal orders, a situation of global legal pluralism, in which it is impossible to tell in advance which normative order will best advance cosmopolitan goals such as human rights.