The affairs, authority or official powers of a prefectural governor pertaining to matters as to which the provisions then in force continue to govern pursuant to the provisions of Article 32, paragraph (1), Article 78, paragraph (1), and Article 87, paragraphs (1) and (13) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. (Act No. 34 of 1985) (hereinafter referred to as "affairs, etc." in this Article) are to be the affairs or authority of the Minister of Health and Welfare or the Director-General of the Social Insurance Agency, or of the director of a Regional Social Insurance Bureau to whom authority has been delegated by either of them or the head of a Social Insurance Office to whom authority has been delegated by that director of a Regional Social Insurance Bureau, who is to perform the affairs or exercise the authority corresponding to those affairs, etc. pursuant to the provisions of the National Pension Act, the Employees' Pension Insurance Act and the Mariners Insurance Act as amended by this Act or of orders based on those Acts.