The ILO supervisory bodies have handled cases which challenged action by a government on the grounds that it restricted voluntary collective bargaining due to:
- The imposition of compulsory arbitration;
- The intervention of authorities in the drafting of collective agreements;
- The requirement of administrative approval of freely concluded collective agreements;
- The cancellation of agreements because they were contrary to national economic policy;
- Administrative or legislative intervention preventing compliance with currently applicable collective agreements or requiring the renegotiation of existing agreements;
- The compulsory extension of the period for which collective agreements are in force;
- Restrictions imposed by the authorities on future collective bargaining;
- Restrictions on clauses to index wages to the cost of living.