A-One Co., Ltd.
Japanese name: 株式会社エーワン · English rendering · Corporate number 9010701012326 · 日本語
A-One Co., Ltd. (株式会社エーワン), a construction employer in Kanagawa with 101–300 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 25.0% of its managers are women (as of July 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 July 2025.
Working hours and retention
Construction in Kanagawa
- JFE Engineering CorporationWomen managers 3.7%
- Toshiba Plant Systems Co., Ltd.Women managers 2.3%
- Fuji Electric E&C Co., Ltd.Women managers 7.3%
- Chiyoda X-One Engineering CorporationWomen managers 3.9%
- Naka Nihon Highway Maintenance Tomei Co., Ltd.Women managers 0.0%
- Nippon Sanso Engineering Co., Ltd.Women managers 2.4%
- Stack Co., Ltd.Women managers 5.5%
- Matsuo Komuten Co., Ltd.Women managers 5.8%
Every construction employer in Kanagawa →
Questions this page answers
- What share of managers are women at A-One Co., Ltd.?
- 25.0%, as reported to MHLW's women's-advancement database (as of July 2025).
- How long do employees stay at A-One Co., Ltd.?
- Average tenure is 11.6 years for men and 11.6 years for women.
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.