This article proposes a theoretical framework for explaining the motivations behind the early adoption of international public policy innovations. While there has been a proliferation of transnational policy diffusion studies, there is less research on why some governments become early adopters when new international policy norms are promoted. Most research on the topic looks only at monocausal explanations without considering their interactions in a coherent, integrated framework. The article proposes four motivations for early adoption: normative, reputation, competition, and locking-in. The framework is then illustrated by application to the early adoption of business and human rights policy innovations, with Colombia and Ecuador serving as two cases for comparative analysis. The article advances understanding of early adoption and policy diffusion by highlighting particularly important explanations for what motivates early adopters to begin processes of subsequent diffusion and suggesting how motivations may interact to strengthen the case for early adoption.
