ESG Data

Environment data

Water resource usage

 
 Units FY2022 FY2023 FY2024 FY2025
Water resource usage 10,000 tons 96.9 93.3 92.1 94.2
Rainwater usage 10,000 tons 3.9 3.1 4.0 3.0

Volumes of special control industrial waste received and discharged

 
 Units FY2022 FY2023 FY2024 FY2025
Volume received 10,000 tons 233,116 216,239 204,828 221,029
Volume discharged 10,000 tons 10,759 10,214 11,421 10,144

Greenhouse gas emissions

 
 Units FY2022 FY2023 FY2024 FY2025
Scope1 t-CO2 27,738 27,951 29,366 29,146
Scope 2 (Market-based) t-CO2 14,153 9,990 11,322 7,278
Scope 2 (Location-based) t-CO2 15,018 15,123 15,882 15,037
Scope 1 + Scope 2 (Consolidated)*1 t-CO2 41,891 37,941 40,688 36,424
Scope 1 + Scope 2 (Non-consolidated)*1 t-CO2 29,891 26,436 27,149 24,298
Scope 3 Category 1 t-CO2 66,717 63,184 82,082 83,442
Scope 3 Category 2 t-CO2 11,259 17,592 20,959 23,628
Scope 3 Category 3 t-CO2 6,416 6,383 6,599 6,609
Scope 3 Category 4 t-CO2 14,881 14,772 12,444 11,990
Scope 3 Category 5 t-CO2 40,190 42,246 42,188 35,067
Scope 3 Category 6 t-CO2 945 876 990 988
Scope 3 Category 7 t-CO2 2,615 2,302 2,379 2,382
Scope 3 Category 8 t-CO2 48 0 0 0
Scope 3 Category 9 t-CO2 374 356 397 367
Scope 3 Category 10 t-CO2 613 444 502 434
Scope 3 Category 11 t-CO2 7,006 7,587 7,555 7,994
Scope 3 Category 12 t-CO2 1,867 1,067 74 23
Scope 3 Category 13 t-CO2 0 0 0 0
Scope 3 Category 14 t-CO2 0 0 0 0
Scope 3 Category 15 t-CO2 0 0 0 0
Scope 3 Total t-CO2 152,931 156,809 176,169 172,924
Scope 1 + Scope 2 emissions per unit of production*1 t-CO2/t 0.021 0.019 0.020 0.019
Avoided CO2 emissions*2 t-CO2 564,000 559,000 555,000 643,000
  • *1. Scope 2 is calculated using market-based values.
  • *2. Please refer to Carbon neutrality for the amount of avoided emissions of CO2.

Environmental audit implementation results

 
 Units FY2022 FY2023 FY2024 FY2025
Number of Works in the Daiseki Group   42 42 49 49
Number of sites where ISO14001
or Eco-Action 21 acquired		   19 21 21 22
Number of sites conducting internal environmental audits   19 21 21 22
Number of sites undergoing external environmental assessments   19 22 21 22
Number of nonconformities identified in internal environmental audits   1 6 4 11
Number of nonconformities identified in external environmental assessments   0 0 1 0

Volume received for recycling treatment

 
 Units FY2022 FY2023 FY2024 FY2025
Waste oil 10,000 tons 41.1 40.9 40.5 43.0
Waste acid 10,000 tons 16.9 15.5 16.2 16.2
Waste alkali 10,000 tons 24.2 23.5 25.7 24.2
Sludge 10,000 tons 29.6 27.6 30.0 28.5
Contaminated soil 10,000 tons 74.9 70.9 70.7 54.7
Waste lead batteries 10,000 tons 2.1 2.1 2.1 1.9
Waste plasterboard 10,000 tons 9.3 10.1 10.3 10.3
Used paper 10,000 tons 0.0 0.0 2.8 2.7
Other 10,000 tons 9.0 15.5 11.9 15.4
Total (Consolidated) 10,000 tons 207.2 206.1 210.2 197.0
Total (non-consolidated) 10,000 tons 108.1 107.0 111.3 110.9

Volume of petroleum product materials received

 
 Units FY2022 FY2023 FY2024 FY2025
Volume received 10,000 kl 0.2 0.2 0.1 0.1

Other resource usage

 
 Units FY2022 FY2023 FY2024 FY2025
Auxiliary materials 10,000 tons 11.7 11.8 11.0 11.2

*Auxiliary materials refer to the chemicals, solidifiers, and other agents used in waste treatment.

Energy usage

 
 Units FY2022 FY2023 FY2024 FY2025
Diesel fuel MWh 51,294 55,716 64,358 65,788
City gas MWh 27,115 29,167 32,342 31,930
Heavy oil B(recycled heavy oil) MWh 14,895 15,231 16,316 15,422
Electricity (excluding electricity derived from renewable energy sources) MWh 34,353 25,996 25,990 16,788
Electricity derived from renewable energy sources MWh 330 8,850 10,270 18,759
Other MWh 26,852 21,287 15,703 16,833
Total MWh 154,839 156,247 164,979 165,520

Ratio of Daiseki Group sales by business

 
 Units FY2022 FY2023 FY2024 FY2025
Industrial waste collection, transportation and intermediate treatment services % 41.84 42.10 41.03 43.11
Sales of recycled fuels and biodiesel fuel % 13.04 13.32 11.95 14.09
Sales of other recycled products (usable metals, chemicals, gypsum) % 4.67 4.96 4.23 4.67
Purification services for contaminated soil % 24.24 22.28 27.40 20.66
Sales of recycled lead products % 5.68 6.52 5.86 6.86
Referral fees for industrial waste treatment, etc. % 3.24 2.82 3.05 3.69
Sales other than environmental business % 7.29 8.00 6.48 6.92
Environmental business sales ratio % 92.71 92.00 93.52 93.08

Recycling rate*

 
 Units FY2022 FY2023 FY2024 FY2025
Consolidated % 89.9 87.2 85.8 89.2
Non-consolidated % 87.7 87.1 87.2 87.1

*Please refer to Initiatives for environmental conservation for the recycling rate.

Volume of material shipped as recycled resources

 
 Units FY2022 FY2023 FY2024 FY2025
Cement raw materials (derived from waste) 10,000 tons 26.1 23.9 24.0 20.7
Cement raw materials (derived from contaminated soil) 10,000 tons 49.1 39.9 36.0 37.3
Usable metals 10,000 tons 0.5 0.5 0.5 0.4
Regeneration agent 10,000 tons 0.4 0.3 0.4 0.3
Plasterboard raw materials 10,000 tons 8.1 9.0 9.3 9.0
Recycled lead 10,000 tons 1.2 1.2 1.2 1.4
Recycled paper 10,000 tons 0.7 0.8 3.6 3.6
Total (Volume of material shipped as recycled resources set as CPs target) 10,000 tons 10.9 11.8 15.0 14.7
Total 10,000 tons 86.1 75.6 75.0 72.7

Volume of supplemental fuel shipments

 
 Units FY2022 FY2023 FY2024 FY2025
Volume shipped 10,000 tons 19.5 19.8 19.4 23.3
Coal equivalent (calorie equivalent) 10,000 tons 15.0 15.2 12.7 15.0

Volume of recycled heavy oil shipments

 
 Units FY2022 FY2023 FY2024 FY2025
Volume shipped 10,000 tons 4.2 4.0 4.0 4.0
Heavy oil equivalent (calorie equivalent) 10,000 tons 4.0 3.9 3.8 3.8

Volumes of petroleum products and other recycled products shipped

 
 Units FY2022 FY2023 FY2024 FY2025
Petroleum products 10,000 tons 0.2 0.2 0.2 0.1
Other recycled products 10,000 tons 19.2 21.8 20.3 15.7

Other emissions

 
 Units FY2022 FY2023 FY2024 FY2025
Sewer discharge 10,000 tons 93.5 93.7 96.0 93.7
River discharge 10,000 tons 39.0 32.0 26.6 31.4
Ocean discharge 10,000 tons 7.6 6.8 6.6 9.2
Incineration 10,000 tons 1.2 1.1 1.0 0.8
Land reclamation 10,000 tons 19.7 24.3 28.9 20.5

Volumes of PRTR substance releases and transfers

 
 Units FY2022 FY2023 FY2024 FY2025
Volume discharged t 1.2 1.6 3.6 3.1
Amount of movement t 9.6 9 10.9 9.3

Air pollution substances emitted

 
 Units FY2022 FY2023 FY2024 FY2025
SOx t 16.6 14.9 28.4 13.1
NOx t 43 37.6 32.9 38.6
Particulate matter t 0.5 6 0.7 0.5

Water pollution substances discharged

 
 Units FY2022 FY2023 FY2024 FY2025
BOD t 26.6 21.7 24.4 23.5
COD t 2 2.1 2.5 2

Social data

Situation of training implementation, etc.

 
 Units FY2022 FY2023 FY2024 FY2025
Total training hours Hours 7,843 8,152 9,226 18,598
Total number of participants People 11,718 11,487 14,287 20,889
Training hours per employee (consolidated) Hours 7.2 7.3 7.5 14.7
of which, total time of compliance study session implementation Hours 5,535 5,726 7,035 6,145
of which, total participants in compliance study sessions People 11,071 11,452 14,070 13,056
Training hours per employee (non-consolidated) Hours 7.8 7.0 7.9 16.1

Recruitment and education-related investment

 
 Units FY2022 FY2023 FY2024 FY2025
Recruitment and education-related investment Million yen 27 23 27 42

Turnover rate

 
 Units FY2022 FY2023 FY2024 FY2025
Men % 2.2 2.6 3.9 4.0
Women % 3.8 6.2 4.2 7.4
Total (Consolidated) % 2.5 3.2 3.9 4.6
Total (non-consolidated) % 1.3 1.9 1.9 2.3

Percentage of paid leave taken

 
 Units FY2022 FY2023 FY2024 FY2025
Consolidated % 60.5 67.3 63.4 69.2
Non-consolidated % 62.9 70.2 70.1 75.4

Average monthly overtime hours for non-managers

 
 Units FY2022 FY2023 FY2024 FY2025
Average monthly overtime hours Hours 39 39 37 40

Maternity and childcare leave

 
 Units FY2022 FY2023 FY2024 FY2025
Number of people taking maternity leave People 7 10 3 13
Percentage of men taking childcare leave* % 10.8 21.4 37.5 44.7
Average number of days of childcare leave taken by men Days － 12.1 61.7 22.2
Percentage of women taking childcare leave* % 85.7 150.0 200.0 61.5
Average number of days of childcare leave taken by women Days － 255.3 454.3 469.3

*The percentage of paid leave taken is calculated with the number of paid leave days granted to an employee during the fiscal year as the denominator and the number of paid leave days taken by the employee during the fiscal year as the numerator.

Number of other system users

 
 Units FY2022 FY2023 FY2024 FY2025
Flexible-hours system Cases 186 141 188 198
Shortened work hours Cases 7 6 10 26
Nursing leave Cases 0 0 1 1

Basic employee information

 
 Units FY2022 FY2023 FY2024 FY2025
Number of male employees People 848 865 947 979
Number of female employees People 156 163 191 204
Number of male managers People 187 195 192 220
Number of female managers People 3 3 10 14
Number of new graduates hired (Men) People 20 7 18 7
Number of new graduates hired (Women) People 7 12 7 10
Number of mid-career hires (Men) People 58 49 67 82
Number of mid-career hires (Women) People 3 9 10 14
Number of employees with disabilities People 15 20 20 19
Number of foreign employees People 0 0 0 0
Average years of service (Men) Years 10.4 10.7 10.3 10.4
Average years of service (Women) Years 7.5 7.5 8.2 7.8
Average annual income (Men) 10,000 Yen 742 757 725 740
Average annual income (Women) 10,000 Yen 481 480 443 483

Number of managers hired mid-career and as new graduates

 
 Units FY2022 FY2023 FY2024 FY2025
Number of managers hired as new graduates People 35 37 38 44
Number of managers hired mid-career People 155 161 164 190

Mid-career professional recruitment ratio

 
 Units FY2022 FY2023 FY2024 FY2025
Mid-career professional recruitment ratio % 3.0 1.0 3.9 3.5

Breakdown of career-track and general positions

 
 Units FY2022 FY2023 FY2024 FY2025
Career-track positions People 786 794 826 866
General positions People 86 93 102 96
No classification People 132 141 210 221

Health management investment amount

 
 Units FY2022 FY2023 FY2024 FY2025
Health management investment amount Million yen － － 46 45

Percentage of periodical health check and thorough health screening implementation

 
 Units FY2022 FY2023 FY2024 FY2025
Health management investment amount % 100.0 100.0 100.0 100.0
Percentage of thorough health screening implementation % 96.6 92.3 91.4 94.6
Percentage of employees subject to specific guidance % 25.0 26.0 27.0 24.4
Smoking rate % － 36.0 36.0 36.5

Stress check implementation

 
 Units FY2022 FY2023 FY2024 FY2025
Stress check implementation rate % 90.0 89.6 85.7 82.5
Rate of highly stressed employees % 8.7 10.1 11.4 10.2

Number of occupational accident occurrences

 
 Units January-
December
2021		 January-
December
2022		 January-
December
2023		 January-
December
2024
Fatal accidents (Group) Cases 0 0 0 0
Accidents requiring time off work (Group) Cases 6 4 10 4
Accidents not requiring time off work (Group) Cases 7 13 16 31
Fatal Accidents (Partner companies) Cases 0 0 0 0
Accidents requiring time off work (Partner companies) Cases 8 6 1 3
Accidents not requiring time off work (Partner companies) Cases 2 5 10 9

Occupation Accidents statictics

 
 Units January-
December
2021		 January-
December
2022		 January-
December
2023		 January-
December
2024
Frequency rate (Daiseki Group)   2.21 1.42 3.27 1.45
Frequency rate (Waste treatment business)   7.36 6.52 6.42 6.65
Frequency rate (Manufacturing business)   1.31 1.25 1.29 1.3
Intensity (Daiseki Group)   0.04 0.06 0.05 0.04
Intensity (Waste treatment business)   0.17 0.51 0.18 0.15
Intensity (Manufacturing business)   0.06 0.08 0.08 0.06
  • *Frequency rate:Number of casualties due to occupational accidents per million total actual working hours (Frequency of accident occurrence)
  • *Severity rate:Severity rate: Total number of days of labor lost per 1,000 total actual labor hours (Degree of severity of accidents)

Situation of implementation of safety training, etc.

 
 Units FY2022 FY2023 FY2024 FY2025
Total education hours Hours 1,869 3,891 4,071 6,793
Total number of participants People 4,563 4,596 4,615 7,677
Number of participants in disaster drills People 389 416 323 615

Near-miss accident proposals

 
 Units FY2022 FY2023 FY2024 FY2025
Number of proposals Cases 6,557 4,791 4,902 5,389

Number of stock ownership association members

 
 Units FY2022 FY2023 FY2024 FY2025
Number of members People 694 729 709 887

Situation of plant tour implementation

 
 Units FY2022 FY2023 FY2024 FY2025
Number of participating companies Companies 537 738 807 923
Number of participants People 912 1,402 1,545 1,724
Average survey score (out of 5) Points 4.7 4.7 4.5 4.7

Governance data

Composition of the Board of Directors

 
 Units FY2022 FY2023 FY2024 FY2025
Internal directors People 3 3 3 3
Outside directors People － 1 1 1
Outside directors (Audit and Supervisory Committee members) People 3 3 3 3
Female outside directors (Audit and Supervisory Committee members) People 1 1 1 1

Composition of the Audit and Supervisory Committee members

  Units FY2022 FY2023 FY2024 FY2025
Internal directors People 0 0 0 0
Outside directors People 3 3 3 3
Female outside directors People 1 1 1 1

Composition of the Appointment and Compensation Committee

  Units FY2022 FY2023 FY2024 FY2025
Internal directors People 2 2 2 2
Outside directors People 3 4 4 4
Female outside directors People 1 1 1 1

Situation of meetings held

  Units FY2022 FY2023 FY2024 FY2025
Board of Directors Times 21 21 20 24
Audit and Supervisory Committee Times 14 14 14 14
Appointment and Compensation Committee Times 0 1 5 2

Total annual compensation

  Units FY2022 FY2023 FY2024 FY2025
Directors (excluding Audit and Supervisory Committee members and outside directors) Million yen 223 147 129 146
Outside directors (excluding Audit and Supervisory Committee members) Million yen － － 1 2
Outside directors (Audit and Supervisory Committee members) Million yen 5 6 7 7

Corruption-related situation

 
 Units FY2022 FY2023 FY2024 FY2025
Number of disciplinary actions taken against employees for corruption Cases 0 0 0 0
Number of contracts terminated or having renewal refused due to corruption-related contract violations Cases 0 0 0 0
Number of corruption-related lawsuits against Daiseki Group companies or employees Cases 0 0 0 0

Situation of donations, etc.

 
 Units FY2022 FY2023 FY2024 FY2025
Amount of political contributions 10,000 Yen 0 0 0 0
Amount of other donations 10,000 Yen 1,000 1,000 1,000 62

Number of violations of laws and regulations, etc.

 
 Units FY2022 FY2023 FY2024 FY2025
Number of adverse dispositions for the various laws and regulations, including environment-related laws and regulations Cases 0 0 0 0
Number of cases of taxes unpaid and additional taxes levied Cases 0 0 0 0
Number of incidents and accidents related to information security, including information leaks Cases 0 0 0 0

Number of patents held and patents applied for

 
 Units FY2022 FY2023 FY2024 FY2025
Patents held Cases 4 4 4 4
Patents pending Cases 2 4 4 5

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