National Pension Act Article 5

In order to supervise operations of the Insurance and examine the insurance issues of the central competent authority, there shall be a committee comprised of representatives from the related government institutions, the insured persons, and experts, with each party basically occupying 1/3 of the seats. Supervision shall be conducted under the collegial system of this committee.The insured citizen and the beneficiary shall file for examination within 60 days, starting from the next day of receiving the notice of assessment, if they have arguments about cases previously approved by the insurer. According to the related regulations, petitions and administrative litigations can then be filed if they disagree with the examination result.The examination boundary of the issues stipulated in the previous paragraph, the deadline and process to apply for examination or modification, the examination operation, and rules on other related issues will all be stipulated by the competent authorities in the central government.
中文原文 國民年金法第5條
中央主管機關為監督本保險業務及審議保險爭議事項,由有關政府機關代表、被保險人代表及專家各占三分之一為原則,以合議制方式監理之。
被保險人及受益人對保險人所為之核定案件發生爭議事項時,應於收到核定通知文件之翌日起六十日內,先申請審議;對於審議結果不服時,得依法提起訴願及行政訴訟。
前項爭議事項審議之範圍、申請審議或補正之期限、程序、審議作業及其他相關事項之辦法,由中央主管機關定之。

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