This Directive is based upon article 100 of the Treaty; it is based on the assumption that the disparities, between Member States in the legislation intended to protect the consumer with respect to these types of selling methods, may directly affect the functioning of the common market and require the approximation of laws in this field.
The Commission shall, in cooperation with Member States, keep under constant review all systems of aid existing in those States. It shall propose to the latter any appropriate measures required by the progressive development or by the functioning of the common market.
