Supervisory regulations of meeting affairs staff of industrial and commercial groups Article 8

Any meeting affairs staff, other than Secretary General (Executive Secretary) or Deputy Secretary General (Deputy Executive Secretary), shall satisfactorily go through a probation period first before their formal appointment or employment. During probation,meeting staff who match one of the situations set forth in Article 11 of the Labor Standards Act may be dismissed.The above-mentioned probation period shall not exceed three months, and the probation period of meeting affairs staff shall be calculated into their seniority once they are employed formally.
中文原文 工商團體會務工作人員管理辦法第8條
工商團體秘書長(總幹事)、副秘書長(副總幹事)以外會務工作人員之聘用,應先予試用,並於試用期滿成績合格後,始予正式聘用;試用期間如符合勞動基準法第十一條情事之一時,始得解聘。
前項試用期間不得逾三個月,並於正式聘用後列入服務年資計算。

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