Understanding the Necessity Requirement in International Investment Arbitration: Balancing Interim Measures and Harm Standards

This paper examines the necessity requirement for interim measures in international investment arbitration, a critical yet contentious aspect of arbitration proceedings. The lack of uniformity in determining necessity, as illustrated by varying standards of irreparable harm and significant harm across different cases, complicates the issue of interim measures. Through a detailed analysis of key arbitration cases, this paper highlights the inconsistencies and challenges faced by tribunals in applying these standards. The study explores how the irreparable harm standard aligns with the exceptional nature of interim measures, while also critiquing its excessive stringency and potential for abuse. By contrasting this with the more flexible substantial harm standard, which enhances fairness but risks increasing the frequency of interim measure applications, the paper underscores the need for a balanced approach. It suggests that recognizing the limitations of monetary compensation and ensuring proportionality in interim measures can address the dilemma of necessity conditions, thereby improving the efficacy and fairness of international investment arbitration.