Article 20

1. The Organisation shall co-operate at all times with the competent authorities of the Contracting States in order to facilitate the proper administration of justice, to ensure the observance of police regulations and regulations concerning public health, labour inspection or other similar national legislation, and to prevent any abuse of the privileges, immunities and facilities provided for in this Protocol.

2. The procedure of co-operation mentioned in paragraph 1 may be laid down in the complementary agreements referred to in Article 25.