Regulations for Attendance by Proxies of Labor Union Members’ Meetings or Representative Meetings of Labor Union Members Article 2

When members of a labor union or their representatives cannot attend meetings in person, they may designate in writing other labor union members or representatives to attend as their proxies and exercise their rights within the scope of their authorizations.Each member or representative shall designate only one proxy and each member or representative shall only be designated as the proxy of one member or representative, and a designated proxy shall not designate his (or her) authority again.
中文原文 工會會員大會或會員代表大會委託出席辦法第2條
會員或會員代表不能出席會議時,得以書面委託其他會員或會員代表出席,並依授權範圍內行使其權利。
每一會員或會員代表以委託一人為限,每一會員或會員代表以受託代表一人為限,且受託代表不得再行委託。

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