In March 2009, the Peruvian NCP received a request for review from the trade union Central Unica de Trabajadores del Peru (CUT) alleging that a Swiss multinational enterprise had breached the employee and industrial relations provisions of the Guidelines by closing its mine and violating workers' rights in Peru.

Due to existing parallel judicial procedures the NCP could not immediately offer its assistance, however the parties expressed the intention of calling on the NCP's good offices during the conciliation phase that occurs within the framework of the regular judicial procedure. On February 2014, CUT advised the NCP that the first instance judgment of the judicial process had been issued and notified and duly requested that the NCP reconnect with the company in order to an out-of-court settlement. Following this request, the NCP has met with both parties and is now providing assistance to acheive a mediated solution.