Member States shall bring into force the laws, regulations and administrative provisions necessary to comply with this Directive not later than 22 June 1996 or ensure, by that date at the latest, that the two sides of industry introduce the requisite provisions by means of collective agreements, with Member States being required to make all the necessary provisions to enable them at all times to guarantee the results laid down by this Directive.

The United Kingdom may refrain from implementing the first subparagraph of Article 8 (1) (b) with regard to the provision relating to the' maximum weekly working time, and also Article 8(2) and Article 9 (1) (b) and (2) for a period of four years from the date specified in subparagraph (a).

The Commission shall submit a report on the effects of this provision.

The Council, acting in accordance with the conditions laid down by the Treaty, shall decide whether this period should be extended.

Member States shall forthwith inform the Commission thereof.