Medical Corporation Koseikai
Japanese name: 医療法人社団 湖聖会 · English rendering · Corporate number 6390005006618 · 日本語
Medical Corporation Koseikai (医療法人社団 湖聖会), a healthcare & welfare employer in Yamagata with 501–1000 employees, reports in the Ministry of Health, Labour and Welfare's women's-advancement database that 35.3% of its managers are women, women's average pay is 90.1% of men's among regular employees, 25.0% of eligible fathers took childcare leave (as of April 2026).
Women's advancement and leave
Figures are for the group. The pay figures compare women's average pay with men's, not pay for the same job. Data as of April 2026.
Working hours and retention
Healthcare & welfare in Yamagata
- Social Welfare Corporation KeijukaiWomen managers 23.5%
- Social Welfare Corporation Yamagata Prefecture Social Welfare FoundationWomen managers 42.2%
- Local Incorporated Administrative Agency Yamagata Prefecture and Sakata City Hospital OrganizationWomen managers 51.6%
- Yamagata Medical Consumers' CooperativeWomen managers 51.8%
- Medical Corporation Shinoda KoseikaiWomen managers 58.3%
- Social Medical Corporation KotokukaiWomen managers 17.6%
- Social Welfare Corporation Tsuruoka City Council of Social WelfareWomen managers 50.0%
- Medical Corporation MitsuwakaiWomen managers 37.5%
Every healthcare & welfare employer in Yamagata →
Questions this page answers
- What share of managers are women at Medical Corporation Koseikai?
- 35.3%, as reported to MHLW's women's-advancement database (as of April 2026).
- What is the gender pay gap at Medical Corporation Koseikai?
- Women's average pay as a percentage of men's: 87.4% across all employees, 90.1% among regular employees, 119.1% among non-regular employees. This compares average pay, not pay for the same job.
- How many fathers take childcare leave at Medical Corporation Koseikai?
- 25.0% of eligible men took childcare leave.
- How much overtime do employees at Medical Corporation Koseikai work, and how much paid leave do they take?
- Average overtime is 3.3 hours a month (median for the same industry and size: 4.7 hours), as reported to MHLW's women's-advancement database.
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.