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Okumura's First Social Bond Will Pay for Ending 60-Day Notes to Subcontractors

Okumura plans to pay every subcontractor in full cash instead of 60-day promissory notes, funding the switch with its first social bond, whose framework JCR has just rated Social 1(F), its top tier.

Sep 7, 20262 min readOKUMURA CORPORATION1833
Illustration of a construction site payment exchange showing a foreman receiving a cash envelope instead of a 60-day promissory note, with rebar and a crane in the background.

Okumura Corporation, the Osaka-based general contractor, has told regulators exactly how it plans to fund a payment reform it announced this month: ending 60-day promissory notes to subcontractors in favor of full cash payment.

In an amended securities registration statement filed with the Kanto Finance Bureau on September 7, 2026, Okumura filled in previously blank terms for its planned first social bond, an unsecured issue carrying an inter-bond pari passu clause. Each bond will have a face value of ¥100mn, priced at par, and Daiwa Securities, Nomura Securities and SMBC Nikko Securities are named as the planned underwriters. The total amount to be raised is still undetermined; the filing only amends a March 2026 shelf registration that caps planned bond issuance at ¥50bn through March 2028.

Okumura's planned first social bond
Terms as amended in the September 7, 2026 registration statement; total issue amount remains undetermined.
FeatureDetail
Bond nameOkumura Series 1 unsecured bond (inter-bond pari passu clause, social bond)
Total issue amountNot yet determined
Per-bond face value¥100mn, priced at par
UnderwritersDaiwa Securities, Nomura Securities, SMBC Nikko Securities
Social finance framework establishedSeptember 2026
JCR framework ratingSocial 1(F), the top tier
External review supportTokyo Metropolitan SDGs finance promotion subsidy
Related shelf registration cap¥50bn planned issuance limit, filed March 2026, valid through March 2028

The proceeds have one specific job. Japan's Construction Business Act permits promissory-note payments to subcontractors with terms of up to 60 days, but Okumura says rising materials and equipment costs, along with a looming shortage of construction workers, have made that practice unsustainable for the firms receiving the notes. The company will abolish 60-day notes, including those settled through debt-assumption arrangements, for all its subcontractors and pay them entirely in cash instead. Every yen raised through the bond is earmarked for the additional working capital that change requires, not for general corporate purposes.

Okumura built a social finance framework in September 2026 to support the bond, aligning it with the 2025 Social Bond Principles, Japan's 2021 Social Bond Guidelines and the 2025 Social Loan Principles. Japan Credit Rating Agency assigned the framework its top mark, Social 1(F), and JCR's external review was itself backed by a Tokyo Metropolitan subsidy for promoting social finance in the fiscal year to March 2027.

Once the bond is issued, Okumura has committed to annual reporting: how much of the proceeds has been allocated, any unallocated balance and the timing for spending it, and the share used for refinancing rather than new spending. On the impact side, the company will disclose the cash-payment execution rate and the number of subcontractors covered, giving bondholders a way to check whether the payment reform is actually reaching the construction firms it is meant to help.