TRCF
Unit : case/200,000 working hours
- 0.30
- 0.25
- 0.20
- 0.15
- 0.10
- 0.05
- 0.00
- 2022
- 2023
- 2024
- 2025
- TRCF(S-OIL)
- TRCF(Contractors)
Safety Training Participants
Unit : person
- 80,000
- 70,000
- 60,000
- 50,000
- 40,000
- 30,000
- 20,000
- 10,000
- 0
- 2022
- 2023
- 2024
- 2025
- Safety Training Participants(Contractors)
- Safety Training Participants(S-OIL)
Female Employee Ratio
Unit : %
Female Employee Ratio (Unit : %) : 2022 to 2025
| Category |
2022 |
2023 |
2024 |
2025 |
| Female Employee Ratio |
8.5 |
9.3 |
10.9 |
12.0 |
- TRCF (Total Recordable Case Frequency): Rate of recordable injuries for employees and contractors per 100 full-time workers

(Unit : case/200,000 working hours)
Safety and Health : Category, 2022, 2023, 2024, 2025 Table.
| Category |
2022 |
2023 |
2024 |
2025 |
| S-OIL |
TRCF |
0.26 |
0.03 |
0.00 |
0.03 |
| LTIR |
0.19 |
0.00 |
0.00 |
0.03 |
| Contractors |
TRCF |
0.24 |
0.14 |
0.07 |
0.00 |
| LTIR |
0.20 |
0.08 |
0.07 |
0.00 |
- TRCF (Total Recordable Case Frequency): Rate of recordable injuries for employees and contractors per 100 full-time workers
- LTIR (Lost Time Injury Rate): Rate of lost-time injuries relative to total work hours

(Unit : sessions, person)
Safety Training : Category, 2022, 2023, 2024, 2025 Table.
| Category |
2022 |
2023 |
2024 |
2025 |
| S-OIL |
No. of training sessions |
654 |
729 |
734 |
675 |
| No. of participants |
41,745 |
40,467 |
43,533 |
43,806 |
| Contractors |
No. of training sessions |
406 |
375 |
387 |
399 |
| No. of participants |
19,374 |
18,456 |
18,669 |
28,783 |

(Unit : person)
Employee and Officers Status : Category, 2022, 2023, 2024, 2025 Table.
| Category |
2022 |
2023 |
2024 |
2025 |
| Male |
2,897 |
2,986 |
3,215 |
3,244 |
| Female |
240 |
257 |
282 |
288 |
| Total |
3,137 |
3,243 |
3,497 |
3,532 |

(Unit : score / 10)
Employee engagement Survey : Category, 2022, 2023, 2024, 2025 Table.
| Category |
2022 |
2023 |
2024 |
2025 |
| Employee engagement survey result |
8.18 |
- |
8.68 |
- |
- Survey frequency: biennial