The legitimacy of multi-stakeholder initiatives (MSIs) as institutions for social and environmental governance in the global economy has received much scholarly attention over the past years. To date, however, research has yet to focus on assessing the legitimacy of MSIs in their interactions with other actors within larger systems of deliberation. Drawing on the deliberative systems perspective developed within deliberative democracy theory, we theorise a normative framework to evaluate the roles of MSIs within the broader systems of governance they co-construct through their interactions with other initiatives, governments, non-governmental organisations, and other external actors. As we demonstrate in our evaluation of the illustrative case of the Bangladesh Accord on Fire and Building Safety as a MSI in the context of the Bangladeshi garment industry, this framework can help researchers assess whether a MSI ultimately serves to enhance or undermine the deliberative legitimacy of the overall system of which it forms a part.

Although the literature on multi-stakeholder initiatives for sustainability has grown in recent years, it is scattered across several academic fields, making it hard to ascertain how individual disciplines, such as business ethics, can further contribute to the debate. Based on an extensive review of the literature on certification and principle-based MSIs for sustainability (n = 293 articles), we show that the scholarly debate rests on three broad themes (the “3Is”): the input into creating and governing MSIs; the institutionalization of MSIs; and the impact that relevant initiatives create. While our discussion reveals the theoretical underpinnings of the 3Is, it also shows that a number of research challenges related to business ethics remain unaddressed. We unpack these challenges and suggest how scholars can utilize theoretical insights in business ethics to push the boundaries of the field. Finally, we also discuss what business ethics research can gain from theory development in the MSI field.