Enforcement Rules of the Labor Pension Act Article 21-2

A worker who chooses to be continuously covered by the retirement mechanism in the Labor Standards Act pursuant to the main provision of Paragraph 1 or Paragraph 2 of Article 8, or Paragraph 2 of Article 8-1 of the Act may, pursuant to Paragraph 3 of Article 14 of the Act, voluntarily contribute to labor pension in an amount not exceeding 6% of their monthly wage.The contribution operations, procedures and formalities, as well as the claiming and calculation of pension payments, distribution of investment returns, and other related matters applicable to a worker who voluntarily contributes to labor pension pursuant to the preceding paragraph shall be governed by the relevant provisions of the Act.
中文原文 勞工退休金條例施行細則第21-2條
依本條例第八條第一項本文、第二項或第八條之一第二項規定,選擇繼續適用勞動基準法之退休金規定者,得依本條例第十四條第三項規定,在其每月工資百分之六範圍內,自願提繳退休金。
依前項規定自願提繳退休金者,其提繳作業、程序、手續與請領、計算方式、收益分配及相關事項,依本條例相關規定辦理。

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