What share of managers are women at Sumiyoshi Kogyo Co., Ltd.?

14.3%, as reported to MHLW's women's-advancement database (as of September 2025).

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

Average overtime is 30.0 hours a month (median for the same industry and size: 16.0 hours), as reported to MHLW's women's-advancement database.

How long do employees stay at Sumiyoshi Kogyo Co., Ltd.?

Average tenure is 10.0 years for men and 10.0 years for women.

← Construction in Yamaguchi

Construction·Yamaguchi·101–300 employees

Sumiyoshi Kogyo Co., Ltd.

Japanese name: 住吉工業株式会社 · English rendering · Corporate number 7250001005735 · 日本語

Sumiyoshi Kogyo Co., Ltd. (住吉工業株式会社), a construction employer in Yamaguchi with 101–300 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 14.3% of its managers are women (as of September 2025).

Women's advancement and leave

Women in management

14.3%

Median, same industry and size: 4.0%

Women among officers

0.0%

Median, same industry and size: 0.0%

Women among new hires

30.0%

For one employment category the company defines, so not comparable with other employers.

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

Not published

Median, same industry and size: 70.0%

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

Not published

Median, same industry and size: 71.8%

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

Not published

Median, same industry and size: 63.6%

Men taking childcare leave

Not published

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

Working hours and retention

Average monthly overtime

30.0 hrs

Median, same industry and size: 16.0 hrs

Paid leave taken

Not published

Median, same industry and size: 70.8%

Average tenure, men

10.0 yrs

For one employment category the company defines, so not comparable with other employers.

Average tenure, women

10.0 yrs

For one employment category the company defines, so not comparable with other employers.

Construction in Yamaguchi

KASHIWABARA CORPORATIONWomen managers 2.4%
Shinko Sangyo Co., Ltd.Women managers 9.1%
Alintec Co., Ltd.101–300 employees
CoprosWomen managers 7.4%
Ube Kogyo Co., Ltd.Women managers 0.0%
Yasunari Komuten Co., Ltd.Women managers 11.1%
Kanmon Kowan Kensetsu Co., Ltd.Women managers 0.0%
Kyowa Kensetsu Kogyo Co., Ltd.Women managers 0.0%

Every construction employer in Yamaguchi →

Questions this page answers

What share of managers are women at Sumiyoshi Kogyo Co., Ltd.?: 14.3%, as reported to MHLW's women's-advancement database (as of September 2025).
How much overtime do employees at Sumiyoshi Kogyo Co., Ltd. work, and how much paid leave do they take?: Average overtime is 30.0 hours a month (median for the same industry and size: 16.0 hours), as reported to MHLW's women's-advancement database.
How long do employees stay at Sumiyoshi Kogyo Co., Ltd.?: Average tenure is 10.0 years for men and 10.0 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.