The essay examines the relationship between the right to strike and global value chains, showing how fragmented production and relocation to jurisdictions with weak trade union protections make the effective exercise of collective action more difficult. After outlining the limits of the recognition of the right to strike in domestic legal systems and international law, the essay focuses on corporate due diligence obligations within global value chains. From this perspective, the duty of vigilance emerges as a possible tool for the indirect and extraterritorial protection of trade union rights, fostering corporate accountability for violations occurring along the value chain. Although still limited in scope, this form of protection is significant, especially where the territorially competent legal systems are unwilling or unable to effectively guarantee freedom of association and the right to strike.