The Daejeon Employment and Labor Office announced on March 9 that it will conduct a special supervision on Lotte Chemical's Daesan plant in Seosan, South Chungcheong Province, where the explosion occurred on March 4.
The labor agency will send 21 workers, including labor supervisors and safety and health-related experts, to the site for 11 days from March 10 to examine whether they comply with the Industrial Safety and Health Act.
It will check how Lotte Chemical managed facilities with high risks and whether it operated the plant in accordance with a preliminary work plan.
The office will also oversee the work area of employees of its partner companies that are normally deployed to dangerous sites.
If it finds any violation of the law, it will take measures such as judicial action and corrective order.
An official at the labor office said, "We will supervise the project with the participation of officials from the company and the management will be strengthened to prevent fires and explosions."
The police have also launched an investigation to determine the cause of the accident. The investigation team in charge of the explosion of Lotte Chemical is checking how the accident took place against factory officials and others.
The police previously restored and analyzed internal CCTV footage and called in some of the employees who worked at the time to receive statements about the explosion.
Lotte Chemical's Daesan plant caught fire with a loud explosion at 2:59 a.m. on March 4.
Two workers were seriously injured in the accident, and nearby residents were injured and treated at a hospital.