Joined Cases C-366/18: Judgment of the Court (Sixth Chamber) of 18 September 2019 (request for a preliminary ruling from the Juzgado de lo Social No 33 de Madrid — Spain) — José Manuel Ortiz Mesonero v UTE Luz Madrid Centro (Reference for a preliminary ruling — Social policy — Directive 2010/18/EU — Revised Framework Agreement on parental leave — National legislation making the granting of parental leave conditional on a reduction in working time, with a proportional reduction in pay — Shift work with variable hours — Request of the worker to perform his work at a fixed schedule to care for his minor children — Directive 2006/54/EC — Equal opportunities and equal treatment of men and women in employment and occupation — Indirect discrimination — Partial inadmissibility)