First-corporation Inc.

Construction ・ 1430

Figures below come from this company's annual securities report (有価証券報告書) filed with Japan's Financial Services Agency. Filing a false statement is a criminal offence, which is what makes them worth building on.

Average annual pay
¥7.8m
filing entity, incl. bonuses
vs peers
+¥2.00m
same industry & average age
Average age
43.0 yrs
Average tenure
6.2 yrs
Employees
180
consolidated
Market cap
¥12.9bn
J-Quants, ~12-week delay
Working here from 22 to 60est. ¥276m grossindustry norm ¥219m ・ ¥205m after tax and social insurance (74%)
What is left after tax and social insurance? →How much did the 2026 changes move it? →

Corporate Number 2012701011066 (National Tax Agency)

Workforce disclosure

Japan requires listed companies to disclose these three ratios. They are useful but easy to misread — the notes matter.

ItemValue What it does not tell you
Female managersdefinition of 'manager' varies by company
Male parental leavecan exceed 100%; says nothing about duration
Gender pay gap (all workers)women's pay as % of men's; not equal-work comparison
Workplace score (beta)51.0deviation vs all listed, 50 = median
Investment score (beta)49.3deviation vs all listed, 50 = median

Pay history

From past annual securities reports. Reorganisations move this figure even when pay itself does not — the average covers the filing entity only.

Fiscal year endAverage annual pay
2023-05-31¥7.3m
2024-05-31¥7.3m
2025-05-31¥7.8m

Similar companies

Same sector, closest by average pay. A starting point for comparison — not a ranking. Pay differences here are driven as much by average age and by how much of the group sits inside the filing entity as by how well a company pays.

Company Average payAvg ageCode
YONDENKO CORPORATION¥7.7m40.01939
taisei oncho co.,ltd.¥7.7m43.41904
NIPPON RIETEC CO.,LTD.¥7.8m43.01938
TOENEC CORPORATION¥7.9m41.81946
TAIHEI DENGYO KAISHA,LTD.¥7.9m43.01968
SAAF Holdings Co., Ltd.¥7.9m52.01447

Limitations

Source: annual securities report (EDINET, Financial Services Agency of Japan); market data from J-Quants (JPX Market Innovation & Research), ~12-week delay. Compiled independently by Corpus; not provided or endorsed by any government agency. Full detail in Japanese: ファーストコーポレーション株式会社.