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Safety Performance

Updated August 2025

Safety Performance

On June 14, 2023, at our Omi Plant, one employee from our partner company died and two others sustained injuries in an accident in which a pipe had burst during maintenance work at. We prays for the deceased and extend our condolences to the bereaved family. We also take this opportunity to express our sympathies to the injured.We sincerely apologize for the inconvenience and concern we have caused to local residents, our many business partners and other persons involved. In addition to fully cooperating with the investigation by the relevant authorities, we have established an Accident Investigative Committee by inviting outside experts and professionals to thoroughly investigate the cause of the accident and formulate measures to prevent recurrence.

  • For definitions of data ranges, please refer to here.
Occupational injury and illness data

Denka has set the target of 0.2 or less for the frequency rate of occupational injuries and illnesses by fiscal 2030 in accordance with its basic policy on occupational health and safety and security.

Item Scope Unit 2021年度 2022年度 2023年度 2024年度 FY2025
Targets
2030
Targets
Assessment of occupational health and safety risks ※1 Number of sites (offices) where risk assessment was conducted Non-Consolidated Base 8 8 8 8 8 7
Percentage of sites where risk assessment was conducted Non-Consolidated % 100% 100% 100% 100% 100% 100%
Employee safety training ※1 Percentage of Denka employees taking courses up to 5 years of employment Non-Consolidated % 100% 100% 100% 100% - 100%
Percentage of first-year Denka employees taking training Non-Consolidated % 100% 100% 100% 100% - 100%
Number of occupational injuries Total Non-Consolidated cases 40 24 24 37 - -
The following items are not allowed Non-Consolidated cases 24 13 19 25 - -
Closed Non-Consolidated cases 16 11 4 12 - -
Death Non-Consolidated cases 0 0 1 0 - -
Total Denka Employees Non-Consolidated cases 12 6 12 18 - -
The following items are not allowed Non-Consolidated cases 6 2 6 13 - -
Closed Non-Consolidated cases 6 4 6 5 - -
Death Non-Consolidated cases 0 0 0 0 - -
Total employees of partner companies Non-Consolidated cases 16 13 11 8 - -
The following items are not allowed Non-Consolidated cases 9 9 8 7 - -
Closed Non-Consolidated cases 7 4 2 1 - -
Death Non-Consolidated cases 0 0 1 0 - -
Total employees of domestic affiliated companies *2 Non-consolidated sites / Domestic & Overseas Key production facilites cases 7 1 1 1 - -
※2 Non-Consolidated cases 5 0 1 1 - -
Closed ※2 Non-Consolidated cases 2 1 0 0 - -
Death ※2 Non-Consolidated cases 0 0 0 0 - -
Total employees of overseas subsidiaries ※2 Non-consolidated sites / Domestic & Overseas Key production facilites cases 3 3 3 9 - -
※2 Non-Consolidated cases 2 2 2 3 - -
Closed ※2 Non-Consolidated cases 1 1 1 6 - -
Death ※2 Non-Consolidated cases 0 0 0 0 - -
Employees of overseas subsidiaries and partner companies ※2 Non-consolidated sites / Domestic & Overseas Key production facilites cases 1 1 0 1 - -
※2 Non-Consolidated cases 1 0 0 1 - -
Closed ※2 Non-Consolidated cases 0 1 0 0 - -
Death ※2 Non-Consolidated cases 0 0 0 0 - -
By cause: Caught in Non-Consolidated cases 8 9 7 11 - -
By cause: Slips, trips and falls Non-Consolidated cases 5 2 1 8 - -
Occupational injury frequency rate Denka total Non-Consolidated % 0.98% 0.67% 0.44% 0.73% 0.63% 0.2%
Average of Japan Chemical Industry Association % 0.41% 0.43% 0.47% Collecting - -
Number of disasters at partner companies (by industry) ※2 Total Non-consolidated sites / Domestic & Overseas Key production facilites cases 16 13 11 8 - -
Manufacturing Non-consolidated sites / Domestic & Overseas Key production facilites cases 4 5 6 3 - -
Loading and unloading Non-consolidated sites / Domestic & Overseas Key production facilites cases 4 4 0 0 - -
Construction Non-consolidated sites / Domestic & Overseas Key production facilites cases 8 4 5 5 - -
Days lost due to work-related injury, death and illness ※3 Non-Consolidated English 162 205 2 48 - -
  • ※1Excluding non-production sites
  • ※2Main Group Companies
  • ※3Occupational injury data
Occupational health and safety management system
Item Scope Unit 2021年度 2022年度 2023年度 2024年度 FY2025
Targets
2030
Targets
Number of sites acquired ISO45001 certification ※1 Principal manufacturing sites
in Japan and overseas
Number of sites - - 3 4 - -
Number of sites acquired OSHMS certification Principal manufacturing sites
in Japan and overseas
Number of sites - - 1 1 - -
Company-wide coverage rate (ISO45001+OSHMS) Principal manufacturing sites
in Japan and overseas
% - - 16% 20% - -
  • ※1Includes Ceraya Factory
Main unit:
8 main production sites (manufacturing 80% of Denka product sales) + 14 sales offices including head office
Consolidated:
38 consolidated subsidiaries in Japan and overseas (90% or more of Denka product sales are manufactured)
Non-consolidated sites / Domestic & Overseas Key Group Production Facilities
25 major production sites (manufacturing 90% or more of Denka product sales)
DFF Inc., Denka Company Limited CSR and Public Relations Office, Denka Company Limited IR Office, Seiwa Business Link
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