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 17, 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 beyond the limit on overtime in cases where the employer must not extend the working hours of the worker making the request beyond the limit on overtime pursuant to the provisions of Article 17, paragraph (1).