Proterial Special Steel Co., Ltd.
Japanese name: 株式会社プロテリアル特殊鋼 · English rendering · Corporate number 4010001089986 · 日本語
Proterial Special Steel Co., Ltd. (株式会社プロテリアル特殊鋼), a metals & metal products employer in Tokyo with 101–300 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 2.8% of its managers are women, 0.0% of eligible fathers took childcare leave (as of March 2025).
Women's advancement and leave
The pay figures compare women's average pay with men's, not pay for the same job. Data as of March 2025.
Metals & metal products in Tokyo
- JFE Steel Co., Ltd.Women managers 2.7%
- YKK AP Co., Ltd.Women managers 7.1%
- Proterial Co., Ltd.Women managers 2.6%
- YKK CORPORATIONWomen managers 10.9%
- Artemira Seikan Co., Ltd.Women managers 4.9%
- Tanico Co., Ltd.Women managers 4.8%
- A.L.M.T. Corp.Women managers 1.4%
- Tetsugen Co., Ltd.Women managers 1.2%
Every metals & metal products employer in Tokyo →
Questions this page answers
- What share of managers are women at Proterial Special Steel Co., Ltd.?
- 2.8%, as reported to MHLW's women's-advancement database (as of March 2025).
- How many fathers take childcare leave at Proterial Special Steel Co., Ltd.?
- 0.0% of eligible men took childcare leave.
Japan Human Capital Data 2026
Every figure for about 36,000 unlisted employers and 3,789 listed companies at once: percentile ranks within each industry and size band, women among supervisors, ten-year retention by gender, women's leave uptake, and every foreign-owned subsidiary flagged with its parent. In a members' dashboard and as Excel and CSV.
What Professional includesSource: Ministry of Health, Labour and Welfare, women's-advancement database (open data), as of 2026-10-06; figures are self-reported by each employer and checked for plausibility by The Hardest Market. 女性の活躍推進企業データベースオープンデータ（2026年10月6日時点）を加工して作成.