Employment Service Act Article 41

When entrusted with publishing or disseminating recruitment advertisements, private employment services institutions must retain detailed records of the entrusting employer (including name, residence, telephone numbers, and identification/business registration numbers) for two months from the date of advertisement. These records must be made available for inspection by competent authorities, and institutions are prohibited from evading, impeding, or refusing such inspections.
中文原文 就業服務法第41條
接受委託登載或傳播求才廣告者,應自廣告之日起,保存委託者之姓名或名稱、住所、電話、國民身分證統一編號或事業登記字號等資料二個月,於主管機關檢查時,不得規避、妨礙或拒絕。

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