28Any person who pursues activities that are real and genuine, to the exclusion of activities on such a small scale as to be regarded as purely marginal and ancillary, must this be regarded as a ‘worker’ within the meaning of Article 45 TFEU. According to the case-law of the Court, the essential feature of an employment relationship is that for a certain period of time a person performs services for and under the direction of another person in return for which he receives remuneration (see judgments in Lawrie-Blum, 66/85, EU:C:1986:284, paragraph 17, and Petersen, C‑544/11, EU:C:2013:124, paragraph 30).
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