Labor Union Act Article 11

A labor union shall be organized by the signatures of no less than thirty workers. A preparatory committee shall be set up to openly recruit members, draft union charter, and convene the inaugural general meeting.The preparatory committee referred to in the preceding Paragraph shall, within thirty days following the convention of the inaugural general meeting, submit the union charter and name lists of its members, members of the board of director and members of the board of supervisors, to the competent authority of the municipal city or county (city) where the labor union is located, to apply for a registration certificate. Provided that, a confederated labor union organized on a nation basis in accordance with Article 8 of the Act shall register with the Central Competent Authority and apply for a registration certificate.
中文原文 工會法第11條
組織工會應有勞工三十人以上之連署發起,組成籌備會辦理公開徵求會員、擬定章程及召開成立大會。
前項籌備會應於召開工會成立大會後三十日內,檢具章程、會員名冊及理事、監事名冊,向其會址所在地之直轄市或縣(市)主管機關請領登記證書。
但依第八條規定以全國為組織區域籌組之工會聯合組織,應向中央主管機關登記,並請領登記證書。

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