The plaintiffs' appeals against the defendants and the appeals against the plaintiffs of defendant E are all dismissed.

1. The reasoning of the court of first instance’s explanation concerning this case is as stated in the reasoning of the first instance judgment, except for the correction of the main sentence of the first instance judgment and the attached Form “Industrial Safety and Health Act” as “former Occupational Safety and Health Act (wholly amended by Act No. 16272, Jan. 15, 2019); and the Enforcement Rule of the Occupational Safety and Health Act as “former Enforcement Rule of the Occupational Safety and Health Act (wholly amended by Ordinance of the Ministry of Employment and Labor, No. 272, Dec. 26, 2019)” as “the former Enforcement Rule of the Occupational Safety and Health Act,” and thus, it is acceptable

2. In conclusion, the judgment of the court of first instance is justified, and all appeals against the Defendants and appeals against the Plaintiffs by Defendant E are dismissed as it is without merit. It is so decided as per Disposition.