①When intending to increase or decrease its number of establishments, a health insurance society must obtain consent from all employers of applicable places of business to which the increase or decrease pertains and from half or more of the insured persons employed at the applicable places of business.

②In the case of an application to make changes to the constitution relating to an increase in the number of establishments of a health insurance society which has applied for the authorization pursuant to the provisions of Article 31, paragraph (1), the phrase "insured persons" in the preceding paragraph is replaced with "persons to be insured".

③When a health insurance society decreases its number of establishments pursuant to the provisions of paragraph (1), the number of members who are insured persons of the health insurance society must be no less than the number specified by Cabinet Order under Article 11, paragraph (1) (paragraph (2) of the same Article if the health insurance society is jointly established) even after the number of establishments has been decreased.

④The provisions of Article 12, paragraph (2) apply mutatis mutandis when consent from insured persons is obtained under paragraph (1).