ESG Data

ESG (Environmental, Social and Governance) data related to our business activities is available below. (Updated: September 30, 2025)
Download PDF fileESG Data Book

Employees

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Number of Employees [Jump to the applicable section1] Male KDDI - Person 8,746 7,887 7,102 7,101 7,105
Female 2,607 2,568 2,275 2,308 2,378
Total 11,353 10,455 9,377 9,409 9,483
Total Group 100% 47,320 48,829 49,659 61,288 64,636
Number of Non-regular Employees Temporary Staff KDDI - Person 4,534 4,574 3,804 3,465 3,467
Contract Employees 1,877 1,844 848 722 696
Total 6,411 6,418 4,652 4,187 4,163
Number of Regular Employees by Age Group Under 30 Male KDDI - Person 1,015 956 872 930 967
Female 541 528 512 534 561
Total 1,556 1,484 1,384 1,464 1,528
30～39 Male 1,877 1,869 1,698 1,769 1,855
Female 617 621 571 607 666
Total 2,494 2,490 2,269 2,376 2,521
40～49 Male 2,901 2,468 2,096 2,021 1,891
Female 996 931 739 690 652
Total 3,897 3,399 2,835 2,711 2,543
50 or Over Male 2,953 2,594 2,436 2,381 2,392
Female 453 488 453 477 499
Total 3,406 3,082 2,889 2,858 2,891
Average Age Male KDDI - Age 43.7 43.3 43.4 43.0 42.8
Female 39.8 40.0 39.7 39.6 39.4
Total 42.8 42.5 42.5 42.2 42.0
Average Years of Service Male KDDI - Years 18.3 17.7 18.0 17.2 16.8
Female 15.5 15.6 15.6 15.3 15.0
Total 17.6 17.2 17.4 16.7 16.4
Number of Managers Male Managers KDDI - Person 4,226 3,930 2,726 2,835 2,912
Department Managers or Higher 558 570 601 633 691
Section Managers 3,668 3,360 2,125 2,202 2,221
Female Managers 370 344 235 273 303
Department Managers or Higher 24 27 30 38 41
Section Managers 346 317 205 235 262
Status of Union Membership Number of Union Members [Jump to the applicable section2] KDDI - Person 10,400 10,545 10,587 10,144 9,687
Union Participation Rate % 99 99 99 99 99
  • [1]
    Includes regular employees and inbound secondees; excludes outbound secondees.
  • [2]
    Includes regular and contract employees, and outbound secondees.
  • Coverage is calculated based on operating revenue.

Hiring

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Recent Graduates Male Total KDDI - Person 188 178 168 214 207
University Graduates (Male) 188 178 168 214 207
Female Total 90 90 86 85 101
University Graduates (Female) 90 90 86 85 101
Junior College/Technical School Graduates 0 0 0 0 0
High School and Other Graduates 0 0 0 0 0
Total 278 268 254 299 308
Percentage of Female % 32.4 33.6 33.9 28.4 32.8
Three-Year Retention Rate of Recent Graduates [Jump to the applicable section1] Male KDDI - % 97.8 92.1 92.0 94.9 89.2
Female 92.5 94.5 97.8 94.4 93.0
Mid-Career Hires Male University Graduates KDDI - Person 140 133 196 296 163
Others 4 6 18 28 5
Total 144 139 214 324 168
Female University Graduates 19 27 31 60 47
Others 2 1 0 1 0
Total 21 28 31 61 47
Total 165 167 245 385 215
Reemployment after Retirement Male KDDI - Person 153 232 257 196 259
Female 16 17 21 22 20
Total 169 249 278 218 279
Number of Non-Regular Employees Who Became Regular Employees KDDI - Person 32 37 20 14 9
Internal Hiring Rate KDDI - % - - 93.4 89.2 90.8
Group 97% - - 50.0 72.1 71.0
Average Employment Cost KDDI - JPY - - 2,847,853 1,748,267 1,823,058
Group 100% - - 316,129 309,878 299,693
  • [1]
    Percentage of recent graduates still employed three years after joining, as of April 1 each year.
  • Coverage is calculated based on operating revenue.
Item Boundary Coverage
(FY2024)		 Unit FY2021 FY2022 FY2023 FY2024
Recent Graduates Mid-Career Hires Recent Graduates Mid-Career Hires Recent Graduates Mid-Career Hires Recent Graduates Mid-Career Hires
Newly Hired Employees Male Under 30 KDDI - Person 178 36 168 44 214 82 207 32
30～39 0 100 0 143 0 189 0 114
40～49 0 3 0 28 0 51 0 22
50 or Over 0 0 0 0 0 1 0 0
Total 317 383 537 375
Female Under 30 90 8 86 12 85 31 101 19
30～39 0 18 0 16 0 29 0 21
40～49 0 0 0 2 0 2 0 7
50 or Over 0 0 0 0 0 0 0 0
Total 116 116 147 148
Total Under 30 268 44 254 56 299 113 308 51
30～39 0 118 0 159 0 218 0 135
40～49 0 3 0 30 0 53 0 29
50 or Over 0 0 0 0 0 1 0 0
Total 433 499 684 523
Male Under 30 Group 97% 538 2,645 601 2,420 589 977 745 900
30～39 4 1,574 0 1,626 2 933 12 911
40～49 0 839 1 727 0 365 1 426
50 or Over 0 585 0 595 0 103 1 138
Total 6,185 5,970 2,969 3,134
Female Under 30 491 4,307 402 3,397 474 960 518 707
30～39 0 2,001 2 1,690 2 616 3 509
40～49 0 1,684 1 1,422 0 206 0 226
50 or Over 0 1,936 0 1,990 0 132 0 60
Total 10,419 8,904 2,390 2,023
Total Under 30 1,029 6,952 1,003 5,817 1,063 1,937 1,263 1,607
30～39 4 3,575 2 3,316 4 1,549 15 1,420
40～49 0 2,523 2 2,149 0 571 1 652
50 or Over 0 2,521 0 2,585 0 235 1 198
Total 16,604 14,874 5,359 5,157
  • Coverage is calculated based on operating revenue.

Turnover

Item Boundary Coverage
(FY2024)		 Unit FY2021 FY2022 FY2023 FY2024
Voluntary Turnover Employees Total Turnover Employees Voluntary Turnover Employees Total Turnover Employees Voluntary Turnover Employees Total Turnover Employees Voluntary Turnover Employees Total Turnover Employees
Number of Turnover Employees Male Under 30 KDDI - Person 53 53 49 49 38 41 29 31
30～39 97 97 105 105 76 96 80 102
40～49 46 46 69 69 57 76 37 62
50 or Over 89 144 100 168 46 167 43 206
Total 285 340 323 391 217 380 189 401
Female Under 30 20 20 15 15 17 19 11 13
30～39 24 24 23 23 14 15 10 12
40～49 20 20 29 29 12 18 9 14
50 or Over 12 19 23 35 8 18 18 30
Total 76 83 90 102 51 70 48 69
Total Under 30 73 73 64 64 55 60 40 44
30～39 121 121 128 128 90 111 90 114
40～49 66 66 98 98 69 94 46 76
50 or Over 101 163 123 203 54 185 61 236
Total 361 423 413 493 268 450 237 470
Turnover Rate (Total) % 2.19 3.05 2.56 3.61 1.99 3.35 1.76 3.50
Male Under 30 Group 97% Person 512 512 611 611 654 784 620 692
30～39 699 699 789 789 600 772 727 840
40～49 312 312 361 361 306 425 325 416
50 or Over 249 318 297 390 181 467 180 509
Total 1,772 1,841 2,058 2,151 1,741 2,448 1,852 2,457
Female Under 30 844 844 925 925 904 1,005 600 679
30～39 515 515 626 626 649 717 464 525
40～49 207 207 264 264 297 340 173 209
50 or Over 119 128 156 176 185 247 94 158
Total 1,685 1,694 1,971 1,991 2,035 2,309 1,331 1,571
Total Under 30 1,356 1,356 1,536 1,536 1,558 1,789 1,220 1,371
30～39 1,214 1,214 1,415 1,415 1,249 1,489 1,191 1,365
40～49 519 519 625 625 603 765 498 625
50 or Over 368 446 453 566 366 714 274 667
Total 3,457 3,535 4,029 4,142 3,776 4,757 3,183 4,028
Turnover Rate (Total) % - - 8.35 8.57 8.69 10.95 7.58 9.60
  • Coverage is calculated based on operating revenue.

Diversity

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Number of Foreign Employees Male KDDI - Person 59 50 50 46 56
Female 50 54 58 55 53
Total 109 104 108 101 109
Total Group 100% Person 4,581 5,111 5,833 15,367 15,762
Ratio of Employees by Nationality or Region Japan KDDI - % - - 98.9 98.9 98.8
China - - 0.6 0.6 0.7
Korea - - 0.3 0.4 0.4
Other Countries - - 0.1 0.1 0.1
Japan Group 100% % - - 94.5 84.1 84.7
China - - 1.2 0.9 0.7
Korea - - 0.3 0.3 0.3
Other Countries - - 4.0 14.8 14.3
Ratio of Managers by Nationality or Region Japan KDDI - % - - 99.7 99.8 99.6
China - - 0.14 0.06 0.22
Korea - - 0.14 0.10 0.20
Other Countries - - 0.03 0.00 0.03
Japan Group 100% % - - 91.3 86.5 90.0
China - - 1.2 1.4 1.1
Korea - - 0.3 0.4 0.5
Other Countries - - 7.2 11.7 8.4
Percentage of Foreigners in New Employees KDDI - % 1.44 2.26 1.97 1.67 1.62
Number of Foreign Managers Male KDDI - Person 14 42 5 4 12
Female 0 11 0 1 2
Total 14 53 5 5 14
Percentage of Female Managers Department Managers or Higher KDDI - % - - 5.3 5.7 5.8
Section Managers - - 9.5 9.6 11.9
Total [Jump to the applicable section1] - - 8.6 8.9 10.5 ✔
Department Managers or Higher Group 100% - - 12.8 15.0 13.3
Section Managers - - 18.1 20.5 19.8
Total - - 16.7 19.2 17.3
Percentage of Female Employees Employee KDDI - % - - 24.3 24.5 25.1
STEM Sections [Jump to the applicable section2] - - 10.9 13.9 12.1
Sales - - 29.5 45.4 30.8
Employee Group 100% - - 45.4 54.5 53.7
STEM Sections [Jump to the applicable section2] - - 16.3 17.0 18.4
Sales - - 28.1 33.3 32.9
Employment of Persons with Disabilities Actual Number [Jump to the applicable section3] KDDI - Person 413 404 396 410 438 [Jump to the applicable section5]
Employment Rate [Jump to the applicable section4] % 2.50 2.58 2.54 2.62 2.82 [Jump to the applicable section5]
  • [1]
    As of April 1, 2025. Includes outbound secondees, excludes inbound secondees. Calculated based on the Act on Promotion of Women's Participation and Advancement in the Workplace (Act No. 64 of 2015).
  • [2]
    STEM: Science, Technology, Engineering, and Mathematics sections.
  • [3]
    The actual number counts persons with severe disabilities as two.
  • [4]
    Includes persons with disabilities employed by KDDI, KDDI Challenged, and KDDI Engineering.
  • [5]
    As of June 1, 2025
  • ✔ = latest data with third-party assurance
  • Coverage is calculated based on operating revenue.

Usage of Childcare and Family Care Support System

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Number of Maternity Leave Recipients Female KDDI - Person 140 101 132 121 139
Number of Paternity Leave Recipients Male KDDI - Person 194 217 153 195 189
Paternity Leave Acquisition Rate % 60.6 62.7 47.5 77.7 62.8
Rate of Paternity Leave Taken by Males Male [Jump to the applicable section1] KDDI - % 18.6 30.9 71.8 [Jump to the applicable section1] 58.1 75.4 ✔
Rate of Childcare Leave Taken by Females Female 100.0 100.0 100.0 100.0 100.0
Reinstatement after Parental Leave of Absence [Jump to the applicable section2] Male KDDI - % 100.0 100.0 100.0 100.0 100.0
Female 100.0 100.0 98.9 100.0 100.0
Retention after Parental Leave of Absence [Jump to the applicable section3] Male KDDI - % 100.0 100.0 - - -
Female 100.0 100.0 - - -
Number of Employees with Shortened Working Hours for Childcare Male KDDI - Person 3 3 3 3 6
Female 450 405 417 454 396
Number of Sick/Injured Childcare Leave Recipients Male KDDI - Person 275 308 379 421 394
Female 358 355 311 317 294
Number of Home Care Absence Recipients Male KDDI - Person 5 1 4 8 6
Female 3 6 5 2 4
Number of Family Care Leave Recipients Male KDDI - Person 134 118 182 190 194
Female 84 87 90 104 90
Number of Employees with Shortened Working Hours for Family Care Male KDDI - Person 4 2 1 3 3
Female 7 8 7 6 2
  • [1]
    Calculated based on the Act on Childcare Leave, Caregiver Leave, and Other Measures for the Welfare of Workers Caring for Children or Other Family Members (Act No. 76 of 1991). For FY2019–2021, the rate is calculated under Article 71-6-1 of the Ordinance. For FY2022, the rate is calculated under Article 71-6-2 to promote paternity leave. In response to disclosure requirements and social demand for longer childcare leave, the calculation method for FY2023 was changed to exclude special childcare leave, using Article 71-6-1. If the FY2022 rate is calculated in accordance with Article 71-6-1, excluding special childcare leave, it is 39.9%. In all years, includes outbound secondees and excludes inbound secondees.
  • [2]
    Calculated as (Number of regular employees who returned from parental leave during the year ÷ Number of regular employees scheduled to return), expressed as a percentage.
  • [3]
    Calculated as (Number of regular employees still employed 12 months after returning from parental leave ÷ Number of regular employees who returned), expressed as a percentage.
  • ✔ = latest data with third-party assurance
  • Coverage is calculated based on operating revenue.

Human Resource Development

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Training Expenses per Employee KDDI - JPY/person 95,000 83,547 182,223 238,547 222,610
Training Time per Employee Hour/person 7.5 10.4 75.7 107.0 59.3
Total Training Time Hour 122,150 136,126 709,950 1,010,733 562,707
Training Expenses per Employee Group 100% JPY/person - - 11,714 10,572 9,827
Training Time per Employee Hour/person - - 5.2 11.6 3.2
Total Training Time Hour - - 1,536,578 4,843,992 1,486,004
Training Expenses by Management Level Managerial Position KDDI - JPY - - 381,670,722 168,317,402 288,522,824
Non-Managerial Position - - 1,327,033,198 2,076,167,692 1,822,489,197
Managerial Position Group 100% - - 547,536,809 477,631,646 684,574,258
Non-Managerial Position - - 1,842,542,662 3,010,702,388 2,947,875,109
Training Time by Management Level Managerial Position KDDI - Hour - - 158,581 61,363 52,417
Non-Managerial Position - - 551,370 949,370 510,290
Managerial Position Group 100% - - 192,204 185,454 189,714
Non-Managerial Position - - 863,502 1,905,162 983,435
Training Expenses by Type of Training New Employee Training KDDI - JPY - - 118,188,911 37,215,550 241,558,662
Newly Appointed Manager Training - - 23,612,516 19,902,312 31,270,520
New Employee Training Group 100% - - 436,729,617 1,112,894,380 1,108,466,477
Newly Appointed Manager Training - - 35,592,618 41,872,860 57,078,610
Training Time by Type of Training New Employee Training KDDI - Hour - - 35,970 32,338 168,918
Newly Appointed Manager Training - - 6,435 10,602 5,420
New Employee Training Group 100% - - 126,787 457,845 545,539
Newly Appointed Manager Training - - 8,727 13,928 14,399
Human Capital Return on Investment [Jump to the applicable section1] Group 100% - 9.8 9.7 10.1 9.1 8.9
  • [1]
    Calculated as (Operating revenue - (Selling, General and Administrative Expenses - Personnel Expenses)) ÷ Personnel Expenses, expressed as a percentage.

Occupational Health & Safety, Health-Focused Management

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Number of Workplace Accidents KDDI - Case 1 1 2 0 1
Of Which, Fatal Accidents 0 0 0 0 0
Number of Serious Workplace Accidents During Construction Case 0 0 0 0 0
Frequency Rate of Workplace Accidents [Jump to the applicable section1] - 0.03 0.03 0.10 0.00 0.05
Severity Rate of Workplace Accidents [Jump to the applicable section1] - 0.00508 0.00100 0.00064 0.00000 0.00064
Average Monthly Overtime Hours [Jump to the applicable section2] Hour 19.5 23.0 26.0 25.6 24.9
Average Monthly Overtime Allowance [Jump to the applicable section2] JPY 64,242 76,922 85,595 92,238 93,674
Total Annual Actual Hours Worked [Jump to the applicable section2] Hour 1,911.7 1,934.1 1,992.1 1,891.9 1,882.2
Number of Annual Paid Holidays Granted Days 19.7 19.7 19.7 19.5 19.7
Number of Annual Paid Holidays Taken Days 14.5 14.5 14.5 14.4 16.7
Rate of Annual Paid Holidays Taken % 73.9 73.8 73.5 73.8 83.6
Rate of Smokers % 22.3 21.8 19.7 18.8 19.2
Illness Detection Rate (Legally Mandated Items) % 63.7 64.5 63.5 62.1 61.3
Productivity Losses Number of Employees Absent from Work Due to Mental Instability [Jump to the applicable section3] Person 87 124 114 134 111
Absenteeism [Jump to the applicable section4] Days - 3.98 4.38 4.40 4.33
Presenteeism [Jump to the applicable section5] % - 34.7 33.6 32.4 33.8
  • [1]
    Calculated based on the Ministry of Health, Labour and Welfare's Survey on Industrial Accidents. Previously calculated using the number of reported cases, but changed to the number of cases with at least one day off work in accordance with the survey method (October 2023).
  • [2]
    Applicable to non-managerial regular employees at KDDI.
  • [3]
    Number of employees absent from work at the end of the fiscal year.
  • [4]
    Absenteeism: Average number of days of sick leave taken per regular employee due to personal illness or injury.
  • [5]
    Presenteeism: Average percentage of productivity loss among regular employees who responded to the stress check, calculated using the WHO-HPQ.

Employee Engagement

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Response Rate of Employee Engagement Survey KDDI - % 94.0 96.7 97.3 97.8 98.0
Ratio of Employees with High Engagement % 53.2 55.0 58.8 60.4 60.3
Ratio of Employees with High Engagement (Target) % - - - 60.0 60.0
Response Rate of Employee Engagement Survey Group 76% % 92.8 94.6 93.9 95.0 95.5
Ratio of Employees with High Engagement % 51.9 52.4 56.6 46.2 54.6
  • The engagement survey includes measures of job satisfaction, purpose, happiness, and stress.
  • Coverage is calculated based on operating revenue.

Remuneration

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Average Annual Salary [Jump to the applicable section1] KDDI - JPY 9,484,602 9,454,416 9,432,871 9,869,482 10,183,458
Group 96% - - - - 5,050,269
Average Annual Remuneration of Executives Male Basic Salary KDDI - Million JPY - - 23.4 23.8 25.1
Basic Salary + Incentives - - 33.0 33.1 34.2
Female Basic Salary - - 26.1 28.5 22.0
Basic Salary + Incentives - - 34.9 38.0 28.0
Male Basic Salary Group 100% - - 18.0 13.6 16.5
Basic Salary + Incentives - - 23.6 17.5 21.1
Female Basic Salary - - 9.7 7.8 8.3
Basic Salary + Incentives - - 12.8 10.0 11.2
Average Annual Remuneration of Managers Male Basic Salary KDDI - Million JPY - - 9.2 9.5 9.6
Basic Salary + Incentives - - 13.6 14.0 14.2
Female Basic Salary - - 8.5 9.1 9.2
Basic Salary + Incentives - - 12.7 13.3 13.4
Male Basic Salary Group 100% - - 7.7 7.3 7.7
Basic Salary + Incentives - - 10.5 10.2 10.6
Female Basic Salary - - 5.1 4.9 5.6
Basic Salary + Incentives - - 6.8 6.6 7.5
Average Annual Remuneration of Non- Managerial Employees Male Basic Salary KDDI - Million JPY - - 6.2 6.3 6.5
Female Basic Salary - - 4.8 5.4 5.7
Male Basic Salary Group 100% - - 4.4 3.8 4.4
Female Basic Salary - - 2.9 2.3 2.5
Gender Pay Gap (Difference in Wages Between Male and Female) [Jump to the applicable section2] All Employees KDDI - % - - 77.0 78.3 81.1
Full-Time Employees [Jump to the applicable section3] - - 78.0 78.7 80.2 ✔
Part-Time and Fixed-Term Employees - - 84.2 83.2 92.3
  • [1]
    Includes bonuses and extra wages.
  • [2]
    Calculated as (Average female wage ÷ average male wage), expressed as a percentage.
  • [3]
    Aggregation period: April 1, 2024 – March 31, 2025. The ratio of female's to male's wages is calculated for the most recent fiscal year based on the Act on Promotion of Women's Participation and Advancement in the Workplace (Act No. 64 of 2015)
  • ✔ = latest data with third-party assurance
  • Coverage is calculated based on operating revenue.

Community Involvement and Development (Social Contribution)

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Total Social Contribution Expenditures [Jump to the applicable section1] [Jump to the applicable section2] Group 82% [Jump to the applicable section3] Billion JPY - - - - 18.8
Total Donations KDDI - Billion JPY - - - 1.0 0.8
+α Project [Jump to the applicable section4]: Total Donations by Fiscal Year KDDI - JPY 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000
+α Project: Number of Donor Organizations Organizations 58 61 66 61 60
+α Project: Cumulative Donations Since Launch JPY 92,481,520 102,481,520 112,481,520 122,481,520 132,481,520
Number of Employees Using Volunteer Leave System KDDI - Person 0 3 0 0 12
  • [1]
    Excludes items such as advertising expenses, membership fees, and political donations, even if for social contribution purposes.
  • [2]
    In-store fundraising and employee donations are not included in total social contribution expenditures.
  • [3]
    ENERES Co., Ltd., OKINAWA CELLULAR TELEPHONE COMPANY, KDDI MATOMETE OFFICE CORPORATION, KDDI Engineering Corporation, BIGLOBE Inc., JCOM Co., Ltd., Chubu Telecommunications Co., Inc., KDDI Foundation, Others
  • [4]
    A program in which KDDI converts employees' internal and external social contribution activities into points, and donates the corresponding amount to charitable organizations on behalf of the employees.

Record of KDDI's Information Ethics Courses

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
KDDI Smartphone and Mobile Phone Safety Classes
Number of Sessions Held for Seniors KDDI - Times 93 123 151 136 139
Number of Seniors Participants Person 1,282 1,633 1,895 1,796 1,863
Number of Sessions Held for Youth Times 2,608 3,217 3,304 3,223 3,205
Number of Youth Participants Person Approx. 330,000 Approx. 490,000 Approx. 740,000 Approx. 580,000 Approx. 600,000
Workshop-Style Outreach Class: "Smartphone de Disaster Literacy"
Number of Schools Hosting the Program KDDI - Schools 3 9 16 16 19
Number of Participants Person 115 489 478 438 676

Information Security

Item Boundary Coverage
(FY2024)		 Unit FY2020 FY2021 FY2022 FY2023 FY2024
Number of Telecommunications Service Interruptions Caused by External Cyberattacks KDDI - Case 0 0 0 0 0
Number of Personal Data Breaches Caused by External Cyberattacks 0 0 0 0 0
Number of Personal Data Breaches 0 0 0 0 0