Article 11 (1) of Regulation (EC) 883/2004 provides for the guiding principle that persons to whom the Regulations apply are subject to the legislation of a single Member State only. The regulation establishes criteria for identifying the applicable legislation. According to Article 11(3) (lex loci laboris), the employed or self-employed person is subject to the legislation of the state in which the activity is carried out, with exceptions for the posting of workers to another Member State for a temporary period (which give exemption from the payment of insurance contributions in the State of employment, governed by Article 12 of Regulation 883/2004) and where a person is working in two or more Member States and certain categories of workers such as civil servants. The rules for determining which Member State’s legislation is to apply are set out in Articles 11 – 16 of Regulation 883/2004 and the related implementing provisions are set out in Articles 14 – 21 of Regulation 987/2009.

Article 11 (1) of Regulation (EC) 883/2004 provides for the guiding principle that persons to whom the Regulations apply are subject to the legislation of a single Member State only. The regulation establishes criteria for identifying the applicable legislation. According to Article 11(3) (lex loci laboris), the employed or self-employed person is subject to the legislation of the state in which the activity is carried out, with exceptions for the posting of workers to another Member State for a temporary period (which give exemption from the payment of insurance contributions in the State of employment, governed by Article 12 of Regulation 883/2004) and where a person is working in two or more Member States and certain categories of workers such as civil servants. The rules for determining which Member State’s legislation is to apply are set out in Articles 11 – 16 of Regulation 883/2004 and the related implementing provisions are set out in Articles 14 – 21 of Regulation 987/2009.