Collective Agreement Act Article 5

The term competent authority referred to in the Act is the Ministry of Labor at the central level; the municipal city governments at the municipal level and the county(city) governments at the county (city) level.
中文原文 團體協約法第5條
本法所稱主管機關:在中央為勞動部;在直轄市為直轄市政府;在縣(市)為縣(市)政府。

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