A new evaluation of the International Court of Justice's advisory opinion on the right to strike has been published by Wolters Kluwer, returning one of the most closely watched questions in international labour law to the centre of professional debate.

The subject of the analysis is the advisory opinion issued by the International Court of Justice, the principal judicial organ of the United Nations seated in The Hague, addressing whether the right to strike enjoys protection under international law. Advisory opinions of the ICJ do not bind individual states in the way judgments in contentious cases do, but they carry significant authoritative weight and regularly shape how treaties and conventions are interpreted by governments, regulators and domestic courts.

For practitioners, the significance of any ICJ pronouncement on the right to strike lies in its interaction with the International Labour Organization's framework. The ILO's Committee of Experts has long treated the right to strike as an implication of Convention No. 87 on Freedom of Association and Protection of the Right to Organise. An advisory opinion from the ICJ that engages with that position can influence how national legislatures draft strike-ballot rules, how courts weigh injunction applications during industrial disputes, and how employers frame essential-service restrictions.

The Wolters Kluwer evaluation examines the reasoning the Court adopted and its likely consequences for states, employers and trade unions. That exercise matters because advisory opinions often function less as final pronouncements than as reference points: arbitral tribunals, supreme courts and labour inspectors cite them when resolving concrete disputes over picketing, notification periods and the scope of permitted industrial action.

The practical takeaway for legal advisers is straightforward. Any organisation negotiating collective bargaining agreements, or any firm advising on workforce disputes with a cross-border dimension, should track how the opinion is received by the ILO supervisory bodies and by national courts. The gap between an advisory opinion's authoritative text and its downstream application is where most of the practical legal risk — and opportunity — will arise.

The full evaluation is available through Wolters Kluwer's publishing platforms.