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戦略的沈黙？EU非財務報告指令下の義務的サステナビリティ開示と企業の過剰主張の規律

Strategic Silence? Mandatory Sustainability Disclosure and the Discipline of Corporate Over‐Claiming Under the European Union Non‐Financial Reporting Directive (原題)

Giacomo Zatini, Nicola Torricella, Armando Della Porta

Business Strategy and the Environment📚 査読済 / ジャーナル2026-08-25#グリーンウォッシュOrigin: EU経営インパクト: 調達リスク対象セクター: cross_sector
DOI: 10.1002/bse.71456
原典: https://doi.org/10.1002/bse.71456

🤖 gxceed AI 要約

日本語

本研究は、EU非財務報告指令（NFRD）の義務的開示が上場企業のグリーンウォッシュを抑制するかを、500人規模の閾値を利用した回帰不連続デザインで検証。閾値を超えると、過剰なサステナビリティ主張が有意に減少し、その効果はコミュニケーション側に集中。排出実績や市場評価への短期的影響は見られず、開示圧力が先に過剰主張を規律する「順序効果」を示唆。

English

This study examines whether mandatory sustainability disclosure under the EU NFRD reduces corporate greenwashing among listed European firms, using a regression discontinuity design around the 500-employee threshold. Crossing the threshold leads to a robust decline in excess sustainability claims, driven by communication rather than performance. No short-run effects on emissions, controversies, or cost of capital, suggesting disclosure pressure disciplines over-claiming before operational change.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本ではSSBJ開示が始まったばかりで、開示義務が企業の過剰主張を抑えるかは重要な論点。本研究成果は、日本の開示制度設計や企業の実務対応に示唆を与える。

In the global GX context

This paper provides causal evidence that mandatory disclosure (NFRD) reduces greenwashing, informing global debates on ISSB/CSRD effectiveness. It highlights that disclosure pressure first curbs over-claiming before affecting real performance, relevant for policymakers designing enforcement mechanisms.

👥 読者別の含意

🔬研究者:Provides causal evidence on disclosure effectiveness and greenwashing measurement, useful for future research on mandatory sustainability reporting.

🏢実務担当者:Highlights that mandatory disclosure can reduce over-claiming, encouraging firms to align communication with actual performance to avoid regulatory and reputational risks.

🏛政策担当者:Demonstrates that mandatory disclosure thresholds can discipline corporate over-claiming, supporting the design of effective sustainability reporting regulations.

📄 Abstract（原文）

ABSTRACT This study examines whether mandatory sustainability disclosure under the European Union Non‐Financial Reporting Directive (NFRD) reduces corporate greenwashing among listed European firms, with a focus on the 500‐employee compliance threshold. We conceptualise greenwashing as strategic decoupling between sustainability communication (talk) and environmental performance (walk). Using merged LSEG Workspace and Orbis data, we estimate a local sharp regression discontinuity design around a predetermined 2016 employment baseline, focusing on 2019–2025 when the key variables are sufficiently observed. Crossing the threshold is associated with a robust decline in a residual‐based excess‐talk measure. Evidence for a standardised talk–walk gap is directionally similar but less precise. Decomposition tests show that the discontinuity sits on the communication side: firms above the threshold reduce sustainability claims, while emissions‐related performance does not exhibit a comparable short‐run shift. We do not detect significant local moderation by external monitoring or organisational complexity, nor statistically significant short‐horizon discontinuities in ESG controversies, valuation, or cost of capital. The evidence is consistent with a sequencing effect in which disclosure pressure disciplines over‐claiming before it produces observable operational change or downstream market consequences.

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