(2) An employer carrying out the work related to the construction industry who appoints a person to perform the work of an overall safety and health controller in the workplace as prescribed by paragraph (2) of Article 15 of the Act and has said person carry out the direction and overall supervision set forth in paragraph (1), (3) and (4) of the same Article, and also appoints a person to perform the work of a principal safety and health supervisor from among persons who are in possession of the qualifications set forth in paragraph (1) of Article 15-2 of the Act and has said person to supervise the matters set forth in the same paragraph (limited to employer who has the obligation to appoint a site safety and health supervisor pursuant to the provision of paragraph (1) and (2) of Article 15-3 of the Act) may be regarded as one who fulfills the legal obligation that he/she shall appoint a site safety and health supervisor pursuant to the provision of paragraph (1) and (2) of Article 15-3 of the Act and has said person carry out the matters set forth in paragraph (1) or (2) of the same Article.