The Regulations Governing Labor by Prisoners Article 33

The prisoner for the autonomous external work shall be terminated for the work if any of the following circumstances is found applicable, and the supervisory authority shall be reported for record:1. Those found to be in non-conformity with the selection requirements under Article 28;2. Those found to be non-eligible for selection due to circumstances under Article 29;3. Those who have seriously violated the provisions of the preceding article; and/or4. Those under circumstances not suitable for external work.
中文原文 受刑人作業實施辦法第33條
自主監外作業受刑人有下列情形之一者,停止其監外作業,並報監督機關備查:
一、發現其不符合第二十八條遴選規定。
二、發現其有第二十九條不得遴選之情形。
三、違反前條規定情節重大。
四、其他不適宜從事監外作業之情形。

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