What share of managers are women at Koyama Seiki Co., Ltd.?

0.0%, as reported to MHLW's women's-advancement database (as of May 2026).

How many fathers take childcare leave at Koyama Seiki Co., Ltd.?

100.0% of eligible men took childcare leave.

How much overtime do employees at Koyama Seiki Co., Ltd. work, and how much paid leave do they take?

employees take 82.2% of their paid leave (median: 77.0%), as reported to MHLW's women's-advancement database.

How long do employees stay at Koyama Seiki Co., Ltd.?

Average tenure is 17.7 years for men and 17.3 years for women.

← Other manufacturing in Shizuoka

Other manufacturing·Shizuoka·101–300 employees

Koyama Seiki Co., Ltd.

Japanese name: 古山精機株式会社 · English rendering · Corporate number 2080401016255 · 日本語

Koyama Seiki Co., Ltd. (古山精機株式会社), a other manufacturing employer in Shizuoka with 101–300 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 0.0% of its managers are women, 100.0% of eligible fathers took childcare leave (as of May 2026).

Women's advancement and leave

Women in management

0.0%

Median, same industry and size: 4.0%

Women among new hires

11.3%

Median, same industry and size: 31.3%

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

Not published

Median, same industry and size: 73.2%

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

Not published

Median, same industry and size: 77.0%

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

Not published

Median, same industry and size: 75.9%

Men taking childcare leave

100.0%

Median, same industry and size: 75.0%

The pay figures compare women's average pay with men's, not pay for the same job. Data as of May 2026.

Working hours and retention

Average monthly overtime

Not published

Median, same industry and size: 12.0 hrs

Paid leave taken

82.2%

Median, same industry and size: 77.0%

Average tenure, men

17.7 yrs

Median, same industry and size: 14.7 yrs

Average tenure, women

17.3 yrs

Median, same industry and size: 11.4 yrs

Other manufacturing in Shizuoka

Alm Medical Support Co., Ltd.Women managers 18.0%
IAI Co., Ltd.Women managers 1.8%
Inaba Shokuhin Co., Ltd.Women managers 4.0%
Purpose Co., Ltd.501–1000 employees
Mother Sun Atsumi Tech Automotive Systems Co., Ltd.Women managers 0.2%
Usui Kokusai Sangyo Co., Ltd.501–1000 employees
SURUGA Production Platform Co., Ltd.Women managers 2.1%
JTEKT Column System Co., Ltd.Women managers 1.0%

Every other manufacturing employer in Shizuoka →

Questions this page answers

What share of managers are women at Koyama Seiki Co., Ltd.?: 0.0%, as reported to MHLW's women's-advancement database (as of May 2026).
How many fathers take childcare leave at Koyama Seiki Co., Ltd.?: 100.0% of eligible men took childcare leave.
How much overtime do employees at Koyama Seiki Co., Ltd. work, and how much paid leave do they take?: employees take 82.2% of their paid leave (median: 77.0%), as reported to MHLW's women's-advancement database.
How long do employees stay at Koyama Seiki Co., Ltd.?: Average tenure is 17.7 years for men and 17.3 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 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.