Joined Cases C-804/18 and C-341/19: Judgment of the Court (Grand Chamber) of 15 July 2021 (request for a preliminary ruling from the Arbeitsgericht Hamburg — Germany) — IX v WABE eV (C-804/18) and MH Müller Handels GmbH v MJ (C-341/19) (Reference for a preliminary ruling — Social policy — Directive 2000/78/EC — Equal treatment in employment and occupation — Prohibition of discrimination on the grounds of religion or belief — Internal rule of a private undertaking prohibiting the wearing of any visible political, philosophical or religious sign or the wearing of conspicuous, large-sized political, philosophical or religious signs in the workplace — Direct or indirect discrimination — Proportionality — Balancing the freedom of religion and other fundamental rights — Legitimacy of the policy of neutrality adopted by the employer — Need to establish economic loss suffered by the employer)