To illustrate the differences between the Article 6.4 grievance process and the UN Green Climate Fund’s Independent Redress Mechanism, we compared these two avenues for remediation with the UN Human Rights Council’s seven effectiveness criteria for grievance mechanisms as outlined in its Guiding Principles on Business and Human Rights. From this overview, the contrast becomes clear: the Article 6.4 grievance process performs significantly less well on all seven effectiveness criteria. The Article 6.4 Supervisory Body must therefore urgently rethink its approach to this crucial component of the 6.4 mechanism.