Supplementary and Continuing Education Act Article 18

Teachers of supplementary education compulsory schools and supplementary advanced education schools shall be hired by the school principal in accordance with the law. Administrative staff shall be hired via one of the following two procedures:(1)selected by the principal from among staff currently employed [at the regular school] to serve concurrently at the supplementary school; or(2)hired in accordance with acts governing the hiring of personnel.For supplementary compulsory education schools and supplementary advanced education schools at all levels, regulations governing [regular] schools in the same category and at the same level shall be applied in determining the qualifications, compensation, and benefits of teaching and administrative and staff.
中文原文 補習及進修教育法第18條
各學校附設之國民補習學校及進修學校之教師,由校長依法聘請合格人員充任之;職員由校長指派現有人員兼任或依聘僱相關法規進用。
各級國民補習學校及進修學校之教職員資格、待遇及保障等,適用同級、同類學校之有關規定。

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