Through liberal interpretations of their mandates, international financial institutions (ifis) have been able to constantly redefine their own roles. The activities of ifis have for a long time moved beyond purely financial matters. In seeking popular legitimacy, during the past decades, ifis have embarked on a governance vocation and reinvented themselves as actors of global governance. In this way, ifis increasingly absorb Labor standards into their operational policies. The inclusion of Labor standards into the 2016 Environmental and Social Framework of the World Bank serves as a recent example. This chapter examines the role and limitations of ifis in setting and enforcing Labor standards. Engagement with Labor issues also presents enormous knowledge management and institutional challenges to ifis. This brings further cultural, ideological and institutional changes to ifis. In conclusion, the potential of ifis transforming into public authorities of global environmental and social justice deserves close scrutiny.