①In the case where a person who retired from the place of business where the person was employed before the date of enforcement of the provisions of Article 4, and who had not made the application under Article 3, paragraph (4) of the Health Insurance Act Before the October 2008 Amendment before that date, makes that application to JHIA on or after the date of enforcement of the provisions of Article 4 by the day on which 20 days have elapsed counting from the day of retirement (if JHIA finds that there are justifiable grounds, the day on which it so finds; the same applies in the following paragraph), that person is to be treated as a person who was an insured person with optional and continued coverage under former government-managed health insurance during the period from the day following the day of retirement to the day before the date of enforcement of the provisions of that Article.

②A person who retired from the place of business where the person was employed before the date of enforcement of the provisions of Article 4, and who made the application under Article 3, paragraph (4) of the Health Insurance Act Before the October 2008 Amendment to the Director-General of the Social Insurance Agency on the day before that date (limited to a person who made that application by the day on which 20 days have elapsed counting from the day of retirement), is to be treated as a person who was an insured person with optional and continued coverage under former government-managed health insurance during the period from the day following the day of retirement to the day before the date of enforcement of the provisions of Article 4.

③A person who is an insured person with optional and continued coverage under former government-managed health insurance on the day before the date of enforcement of the provisions of Article 4 (including a person treated as having been an insured person with optional and continued coverage pursuant to the preceding two paragraphs, but excluding a person who, on that day, fell under any of Article 38, items (i) through (iii) of the Health Insurance Act Before the October 2008 Amendment) is to become, on the date of enforcement of the provisions of Article 4, an insured person with optional and continued coverage under the health insurance administered by JHIA. In this case, the period during which that person was an insured person with optional and continued coverage under former government-managed health insurance is deemed to be a period during which the person was an insured person with optional and continued coverage under the health insurance administered by JHIA.

④A person who was an insured person (excluding an insured person with optional and continued coverage) under former government-managed health insurance on the day before the date of enforcement of the provisions of Article 4, and who retired from the place of business where the person was employed on that day and, on that day, made the application under Article 3, paragraph (4) of the Health Insurance Act Before the October 2008 Amendment to the Director-General of the Social Insurance Agency, is to become, on the date of enforcement of the provisions of Article 4, an insured person with optional and continued coverage under the health insurance administered by JHIA.