National Pension Act Article 3

Competent authorities of this Act include: central social welfare competent authorities for the central government, municipal city government for the municipality, and county government for the county.
中文原文 國民年金法第3條
本法所稱主管機關:在中央為中央社政主管機關;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.