Regulations for the Mediation of Labor-Management Disputes Article 17

Qualifications of mediators referred to in Paragraph 1, Article 13 shall attend the training courses prescribed in Article 15 and passed the evaluation prescribed in the preceding Article, they can be reappointed as mediators after signing in the certificates by the local competent authority.
中文原文 勞資爭議調解辦法第17條
具備第十三條第一項資格之調解人,應參加第十五條之研習,並依前條規定評量合格,經地方主管機關簽證後,始得續任調解人。

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