Mitsui & Co. Plastics Ltd.

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Company

Action Plan Based on the Act on Advancement of Measures to Support Raising Next-Generation
Children and the Act on the Promotion of Women's Active Engagement in Professional Life

We have formulated an action plan as follows in order to create a working environment in which women can fully demonstrate their individual abilities.

1.Plan period

Five years from December 1, 2025 to March 31, 2030

2.Goals and efforts

Goal 1:
Increase the percentage of women for career-track employees to at least 20%.

● From December 2025
To increase the hiring of women for career-track positions, we will make it easier for women's applicants to envision working at our company through our recruitment website and brochures distributed to prospective hires.

Goal 2:
Increase the percentage of male employees taking childcare leave to at least 50%.

● From December 2025
Promote understanding of the childcare leave system among managers and colleagues.
● From April 2026
Interview those who have taken and those who have not taken such leave and ask about their personal situations, and consider measures to improve the childcare leave-taking rate.

Goal 3:
Keep the monthly average overtime hours per full-time employee under 20 hours.

● From December 2025
Promote departmental management of overtime, and the streamlining and leveling of work assignments.

Women’s Career Promotion Measures

1.Proportion of female employees out of total new employees

  Full-time employees Administrative staff Contract employees Total
Period Men Women Total Women
Ratio
Men Women Total Women
Ratio
Men Women Total Women
Ratio
Men Women Total Women
Ratio
Apr.1, 2015–
Mar.31, 2016
7 2 9 22% 0 5 5 100% 0 0 0 - 7 7 14 50%
Apr.1, 2016–
Mar.31, 2017
9 1 10 10% 0 7 7 100% 1 1 2 50% 10 9 19 47%
Apr.1, 2017–
Mar.31, 2018
6 2 8 25% 0 4 4 100% 1 1 2 50% 7 7 14 50%
Apr.1, 2018–
Mar.31, 2019
13 1 14 7% 0 9 9 100% 6 1 7 14% 19 11 30 37%
Apr.1, 2019–
Mar.31, 2020
11 5 16 31% 0 6 6 100% 2 3 5 60% 13 14 27 52%
Apr.1, 2020–
Mar.31, 2021
15 1 16 6% 0 7 7 100% 4 8 12 66% 19 16 35 46%
Apr.1, 2021–
Mar.31, 2022
16 4 20 20% 0 6 6 100% 1 5 6 83% 17 15 32 47%
Apr.1, 2022–
Mar.31, 2023
21 4 25 16% 0 6 6 100% 2 8 10 80% 23 18 41 44%
Apr.1, 2023–
Mar.31, 2024
16 6 22 27% 0 11 11 100% 9 11 20 55% 25 28 53 53%
Apr.1, 2024–
Mar.31, 2025
12 7 19 37% 0 8 8 100% 2 3 5 60% 14 18 32 56%

2.Proportion of women out of total number of employees

  Full-time employees Business staff Total
Period Men Women Total Women
Ratio
Men Women Total Women
Ratio
Men Women Total Women
Ratio
April 2015 247 23 270 8.5% 1 182 183 99.5% 248 205 453 45.3%
April 2016 251 21 272 7.7% 1 184 185 99.5% 252 205 457 44.9%
April 2017 249 23 272 8.5% 1 187 188 99.5% 250 210 460 45.7%
April 2018 253 24 277 8.7% 1 187 188 99.5% 254 211 465 45.4%
April 2019 249 25 274 9.1% 1 190 191 99.5% 250 215 465 46.2%
April 2020 247 24 271 8.9% 1 191 192 99.5% 248 215 463 46.4%
April 2021 251 29 280 10.4% 1 193 194 99.5% 252 222 474 46.8%
April 2022 251 33 284 11.6% 1 193 194 99.5% 252 226 478 47.3%
April 2023 260 34 294 11.6% 2 201 203 99.0% 262 235 497 47.3%
April 2024 256 40 296 13.5% 2 210 212 99.1% 258 250 508 49.2%
April 2025 248 44 292 15.1% 2 215 217 99.1% 250 259 509 50.9%

3.Ratio of paid leave days taken

Fiscal year Men Women Average
Year ended March 2015 56% 63% 59%
Year ended March 2016 57% 69% 62%
Year ended March 2017 63% 68% 65%
Year ended March 2018 66% 72% 69%
Year ended March 2019 67% 74% 70%
Year ended March 2020 67% 73% 69%
Year ended March 2021 61% 56% 59%
Year ended March 2022 66% 64% 65%
Year ended March 2023 75% 77% 76%
Year ended March 2024 78% 83% 80%
Year ended March 2025 70% 70% 70%

4.Comparison of Base Salaries Between Female and Male Employees

Fiscal year All employees Full-time employees Contract employees
Year ended March 2023 70.2% 69.7% 75.9%
Year ended March 2024 69.2% 68.9% 83.0%
Year ended March 2025 69.3% 68.7% 76.1%

5.Female Representation in Management

Fiscal year Managers Women managers Contract employees
Year ended March 2023 61 3 4.9%
Year ended March 2024 71 3 4.2%
Year ended March 2025 71 2 2.8%

6.Childcare Leave Participation Rate

Fiscal year Number of Employees
Eligible for Parental Leave ✶①
Number of Employees
Who Took Parental Leave
Parental Leave
Take-up Rate
Men Women Men Women Men Women
Year ended March 2023 9 13 3 13 33.3% 100%
Year ended March 2024 9 15 1 15 11.1% 100%
Year ended March 2025 10 18 0 18 0.0% 100%
Year ended March 2026
(〜Nov.2025)
4 18 3 *② 18 75.0% 100%

*①All employees who are eligible for the Parental Leave Policy are counted as users of the policy.
(Cases in which employees returned to work after maternity leave only, without taking parental leave, are excluded.)
*②Three male employees used the Parental Leave Policy in fiscal year 2025, including one who exercised an entitlement arising in 2024.

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