Enforcement Rules of Labor Union Act Article 14

The number of members’ representatives of a labor union elected in accordance with Paragraph 1 to Article 15 of the Act, shall be at least three times of the number of directors of the board to be elected.The number of members’ representatives of confederation of labor unions shall be at least two times of the number of directors of the board to be elected.
中文原文 工會法施行細則第14條
工會依本法第十五條第一項規定選出會員代表之數額,至少為應選理事名額之三倍。
工會聯合組織之會員代表數額,至少為應選理事名額之二倍。

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