What share of managers are women at Ko-Aisei Co., Ltd.?

17.9%, as reported to MHLW's women's-advancement database (as of September 2025).

Ko-Aisei Co., Ltd.

Japanese name: コーアイセイ株式会社 · English rendering · Corporate number 3390001000131 · 日本語

Ko-Aisei Co., Ltd. (コーアイセイ株式会社), a chemicals employer in Yamagata with 101–300 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 17.9% of its managers are women (as of September 2025).

Women's advancement and leave

Women in management

17.9%

Median, same industry and size: 10.0%

Women's pay as % of men's, all

Not published

Median, same industry and size: 76.0%

Women's pay as % of men's, regular

Not published

Median, same industry and size: 79.6%

Women's pay as % of men's, non-regular

Not published

Median, same industry and size: 59.3%

Men taking childcare leave

Not published

Kurumin

The pay figures compare women's average pay with men's, not pay for the same job. Data as of September 2025.

Chemicals in Yamagata

Nisshin Seiyaku Co., Ltd.Women managers 27.6%

Every chemicals employer in Yamagata →

Questions this page answers

What share of managers are women at Ko-Aisei Co., Ltd.?: 17.9%, as reported to MHLW's women's-advancement database (as of September 2025).

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 includes

Source: 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.