49The Court has also held that national measures liable to hinder or make less attractive the exercise of fundamental freedoms guaranteed by the Treaty can be justified only if they fulfil four conditions: they must be applied in a non-discriminatory manner; they must be justified by overriding reasons based on the general interest; they must be suitable for securing the attainment of the objective which they pursue; and they must not go beyond what is necessary in order to attain that objective (see Case C-424/97 Haim [2000] ECR I-5123, paragraph 57, and the case-law cited).
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