1. Member States shall adopt the laws, regulations and administrative provisions necessary to comply with this Directive no later than 8 October 2004, or shall ensure by that date at the latest that management and labour introduce the required provisions by way of agreement, the Member States being obliged to take all necessary steps enabling them at all times to guarantee the results imposed by this Directive. They shall forthwith inform the Commission thereof.
2. When Member States adopt these measures, they shall contain a reference to this Directive or shall be accompanied by such reference on the occasion of their official publication. The methods of making such reference shall be laid down by the Member States.