1. In order to tackle fraud and abuse, Member States may, after consulting the relevant social partners in accordance with national law and/or practice, take additional measures on a non–discriminatory and proportionate basis in order to ensure that in subcontracting chains the contractor of which the employer (service provider) covered by Article 1(3) of Directive 96/71/EC is a direct subcontractor can, in addition to or in place of the employer, be held liable by the posted worker with respect to any outstanding net remuneration corresponding to the minimum rates of pay and/or contributions due to common funds or institutions of social partners in so far as covered by Article 3 of Directive 96/71/EC.

2. As regards the activities mentioned in the Annex to Directive 96/71/EC, Member States shall provide for measures ensuring that in subcontracting chains, posted workers can hold the contractor of which the employer is a direct subcontractor liable, in addition to or in place of the employer, for the respect of the posted workers' rights referred to in paragraph 1 of this Article.

3. The liability referred to in paragraphs 1 and 2 shall be limited to worker's rights acquired under the contractual relationship between the contractor and his or her subcontractor.

4. Member States may, in conformity with Union law, equally provide for more stringent liability rules under national law on a non-discriminatory and proportionate basis with regard to the scope and range of subcontracting liability. Member States may also, in conformity with Union law, provide for such liability in sectors other than those referred to in the Annex to Directive 96/71/EC.