38A measure which constitutes an obstacle to freedom of movement for workers can be accepted only if it pursues a legitimate aim compatible with the Treaty and is justified by overriding reasons in the public interest. Even if that were so, application of that measure would still have to be such as to ensure achievement of the objective in question and not go beyond what is necessary for that purpose (see, inter alia, Case C-19/92 Kraus [1993] ECR I-1663, paragraph 32; Bosman, paragraph 104; Kranemann, paragraph 33; and ITC, paragraph 37).
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