40As regards, in the second place, the appropriateness of an internal rule such as that at issue in the main proceedings, it must be held that the fact that workers are prohibited from visibly wearing signs of political, philosophical or religious beliefs is appropriate for the purpose of ensuring that a policy of neutrality is properly applied, provided that that policy is genuinely pursued in a consistent and systematic manner (see, to that effect, judgments of 10 March 2009, Hartlauer, C‑169/07, EU:C:2009:141, paragraph 55, and of 12 January 2010, Petersen, C‑341/08, EU:C:2010:4, paragraph 53).
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