Social Worker Act Article 31

A social worker may not perform professional duties unless they have joined a social worker association.A social worker association shall not refuse a social worker to join in.
中文原文 社會工作師法第31條
社會工作師非加入社會工作師公會不得執行業務。
社會工作師公會亦不得拒絕其加入。

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