Labor Standards Act Article 67

An employer may retain an apprentice upon expiration of his/her training period and shall pay him the same wage rate payable to other workers doing the same work. The retention period, if specified in an apprenticeship training contract, shall not be longer than the training period.
中文原文 勞動基準法第67條
技術生訓練期滿,雇主得留用之,並應與同等工作之勞工享受同等之待遇。
雇主如於技術生訓練契約內訂明留用期間,應不得超過其訓練期間。

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