Civil Servant Association Act Article 26

The national civil servant association shall be collectively organized with agency civil servant associations from the Office of the President, National Security Council, the five Yuans, central government ministries and same-level agency civil servant associations, and civil servant associations representing special municipalities, counties (cities) as members. The civil servant association of each body appoints member representatives, one for membership under 1000 persons, with one representative per additional 1000 members, to be rounded down to the lowest unit of 1000, who exercise the rights and responsibilities on behalf of the civil servant association of their respective agency.
中文原文 公務人員協會法第26條
全國公務人員協會以總統府、國家安全會議、五院、各部及同層級機關公務人員協會及各直轄市、縣(市)之機關公務人員協會為會員共同組織之,並分別自各該機關公務人員協會推選會員代表,其會員人數在一千人以下者,各推選一名,超過一千人者,每一千人增加代表一名,尾數未滿一千人者,以一千人計,分別代表各該機關公務人員協會行使職權。

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