The situation where the whereabouts of foreign workers brought into the country becomes unknown within three months of their arrival in Taiwan, and the number and ratio of such workers reach a certain level within a year, as detailed in Subparagraph 17, Paragraph 1, Article 40 of the Act, refers to a situation where the foreign workers whose whereabouts become unknown within the following periods reach the number and ratio stipulated in Schedule 1, Article 15.(1) Within 31-90 days of arriving in Taiwan.(2) Within 30 days of arriving in Taiwan, when the private employment services institution and its branch agencies fail in the tasks assigned them.In accordance with the provisions of Schedule 1, Article 15, the Central Competent Authority is required to conduct regular inspections of private employment services institutions in March, June, September, and December each year.If on conducting the aforementioned inspection the Central Competent Authority discovers that the number and percentage of foreign workers brought into Taiwan by a private employment services institution whose whereabouts are unknown reaches the level detailed in Schedule 1, Article 15, the case will be handed over to the competent authority at the municipality or county (city) level and a fine imposed.Schedule 1.pdf