Statute of Open Prisons Article 21

An inmate who performs well in prison and does not pose a risk of endangering public order or society may go home for a visit on weekends or national holidays.Inmates are allowed to go home for a visit in the event of death of the inmate’s grandparent, parent, parent-in-law, spouse, child, or sibling.Where an inmate is allowed to go home for a visit in accordance with the preceding two paragraphs, but fails to return to the prison on the designated date without legitimate reason, the number of days outside the prison will not be counted as time served. If an inmate intentionally fails to return to the prison, he or she shall be charged with escaping.Regulations governing home visit criteria, visitees, frequency, duration, scope of activity, control and implementation methods, review standards, approval procedures, change or cancellation after approval and other matters to comply with shall be prescribed by the Ministry of Justice.
中文原文 外役監條例第21條
受刑人在監行狀善良且無危害公共秩序、社會安全之虞,得許於例假日或紀念日返家探視。
受刑人遇有祖父母、父母、配偶之父母、配偶、子女或兄弟姊妹喪亡時,得許其返家探視。
受刑人經依前二項規定許其返家探視,無正當理由未於指定期日回監者,其在外日數不算入執行刑期。
其故意者,並以脫逃論罪。
受刑人返家探視條件、對象、次數、期間、活動範圍、管控與實施方式、審查基準、核准程序、核准後之變更或取消及其他應遵行事項之辦法,由法務部定之。

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