42It is also settled case-law that the special nature of certain services does not remove them from the ambit of the fundamental principle of freedom of movement (Case 279/80 Webb [1981] ECR 3305, paragraph 10, and Kohll paragraph 20), so that the fact that the national rules at issue in the main proceedings are social security rules cannot exclude application of Articles 59 and 60 of the Treaty (Kohll, paragraph 21).
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.