Employers must not dismiss or otherwise treat a worker disadvantageously on the grounds that the worker makes a request pursuant to the provisions of Article 19, paragraph (1) (including as applied mutatis mutandis pursuant to the provisions of paragraph (1) of the preceding Article; the same applies hereinafter in this Article) or does not work late-night in cases where the employer may not have the worker work late at night, pursuant to the provisions of Article 19, paragraph (1).