本文以2018年至2022年間台灣非金融業之上市櫃公司為研究對象，探討顧客集中度對供應商ESG爭議的影響，並進一步分析CEO異動是否對此關係具調節效果。本文以TESG永續事件雷達資料庫為基礎，衡量公司所涉ESG爭議之強度，並採用OLS迴歸進行實證分析。研究結果顯示，顧客集中度越高的供應商，發生ESG爭議的嚴重程度亦越高，顯示依賴少數大客戶的公司反而可能因成本壓力或談判劣勢，而減少對社會責任的投入。另外也發現總經理短期內異動次數越高，會進一步強化顧客集中度對ESG爭議的正向關聯性，突顯總經理穩定性對公司ESG爭議管理的重要性。本文有助於公司與利害關係人理解顧客關係管理與內部治理對ESG爭議的潛在影響。

This study discusses the impact of customer concentration on ESG controversies among suppliers, based on non-financial listed firms in Taiwan-listed companies from 2018 to 2022. Besides, this study also examines whether CEO turnover moderates this relationship. Based on the data from the TESG Sustainable Event Radar database which measures the severity of ESG controversies, this study use OLS regression to conduct empirical analysis. The results indicate that suppliers with higher customer concentration tend to experience more severe ESG controversies, suggesting that firms heavily reliant on a few major customers may compromise social responsibility due to cost pressures or weaker bargaining power. Furthermore, frequent CEO turnover within a short period further strengthens the positive relationship between customer concentration and ESG controversy severity, highlighting the critical role of managerial stability in managing ESG-related risks. This study contributes to a deeper understanding for companies and stakeholders on how customer relationship management and internal governance affect ESG controversies.

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