Regulations Governing Enrollment in Postal Simple Life Insurance Policies Article 24

When the number of employees or members and their families of any institution, school, factory, company, store or other government registered organization (which are not established for the purpose of purchasing insurance) reach a certain number, they may purchase group individual life insurance.The minimum number as mentioned in the preceding paragraph shall be set by Chunghwa Post.
中文原文 郵政簡易人壽保險投保規則第24條
個人壽險集體保件,指機關、學校、工廠、公司、行號或其他經政府立案,非以購買保險而組織之團體,其所屬員工或成員及其家屬在一定人數以上者,得以集體保件方式辦理。
前項一定人數,由中華郵政公司定之。

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