Foreign workers employed in a factory, company, business enterprise, news agency, cultural organization, public welfare or cooperative enterprise that employs fewer than 5 workers, and foreign workers who are hired by industries outside the provision in Article 8 of Labor Insurance Act (such as teaching in cram schools as foreign language teacher), or are hired as foreign family servants or caretakers by natural persons or employees and representatives of representative offices of foreign companies which have legally approved to establish in Taiwan, they could enroll in Labor Insurance voluntarily.