Member States shall adopt such measures as are necessary to enable contributions to continue to be made to a supplementary pension scheme established in a Member State by or on behalf of a posted worker who is a member of such a scheme during the period of his or her posting in another Member State.

Where, pursuant to paragraph 1, contributions continue to be made to a supplementary pension scheme in one Member State, the posted worker and, where applicable, his employer shall be exempted from any obligation to make contributions to a supplementary pension scheme in another Member State.