"The dynamics of regulation of employment relations in the global supply chains of multinational enterprises (MNEs), including the growth of various forms of private regulation, has attracted significant scholarly attention. However, the role of international organisations in supporting supranational institutional pathways for social contestation of business practices has been neglected. This study addresses this gap by analysing cases lodged by national and global unions through the specific instances mechanism of the OECD Guidelines for MNEs. It reveals the design and operational deficiencies of this mechanism but also points to the current and future opportunities for firm‐level labour grievances and justice claims to be addressed at the supranational scale."

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