Collective Agreement Act Article 2

Collective agreement referred to in the Act is a written agreement which is concluded by an employer or employer organization with legal person status and a labor union established in accordance with the Labor Union Act for the purpose of governing employment relations and other related matters.
中文原文 團體協約法第2條
本法所稱團體協約,指雇主或有法人資格之雇主團體,與依工會法成立之工會,以約定勞動關係及相關事項為目的所簽訂之書面契約。

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