Middle-aged and Elderly Employment Promotion Act Article 15

If any of middle-aged and senior persons and elderly persons who is applying for job or under employment finds that the employer breaches the first paragraph of Article 12, he/she may file a complaint with the local competent authority.After the local competent authority receives the complaint referred to the preceding paragraph, the Employment Discrimination Review Committee constituted pursuant to the Employment Service Act and relevant regulations will carry out the judgment of age discrimination.
中文原文 中高齡者及高齡者就業促進法第15條
求職或受僱之中高齡者及高齡者發現雇主違反第十二條第一項規定時,得向地方主管機關申訴。
地方主管機關受理前項之申訴,由依就業服務法相關規定組成之就業歧視評議委員會辦理年齡歧視認定。

English translation for reference only; the Chinese text prevails. Not legal advice.