Member States may stipulate that Articles 3, 4 and 5 shall not apply to contributions due under national statutory social security schemes or under supplementary occupational or inter-occupational pension schemes outside the national statutory social security schemes.
Member States shall take the measures necessary to ensure that non-payment of compulsory contributions due from the employer, before the onset of his insolvency, to their insurance institutions under national statutory social security schemes does not adversely affect employees’ benefit entitlement in respect of these insurance institutions in so far as the employees’ contributions have been deducted at source from the remuneration paid.
Member States shall ensure that the necessary measures are taken to protect the interests of employees and of persons having already left the employer’s undertaking or business at the date of the onset of the employer’s insolvency in respect of rights conferring on them immediate or prospective entitlement to old-age benefits, including survivors’ benefits, under supplementary occupational or inter-occupational pension schemes outside the national statutory social security schemes.