33The Court has also repeatedly held that Article 2(2)(a) of that directive must be interpreted as meaning that an internal rule of a private undertaking prohibiting the wearing of any visible sign of political, philosophical or religious belief in the workplace does not constitute direct discrimination ‘on the [ground] of religion or belief’ for the purposes of that provision provided that it covers any manifestation of such beliefs without distinction and treats all workers of the undertaking in the same way by requiring them, in a general and undifferentiated way, inter alia, to dress neutrally, which precludes the wearing of such signs (judgments of 14 March 2017, G4S Secure Solutions, C‑157/15, EU:C:2017:203, paragraphs 30 and 32, and of 15 July 2021, WABE and MH Müller Handel, C‑804/18 and C‑341/19, EU:C:2021:594, paragraph 52).
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