Corporate Social Responsibility as a Buffer in Times of Crisis: Evidence from China’s Stock Market During COVID-19

Dongdong Huang, Shuyu Hu and Haoxu Wang ()
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Dongdong Huang: Business School, Nankai University, Nankai 300071, China
Shuyu Hu: School of Management, Fudan University, Shanghai 200433, China
Haoxu Wang: Business School, Nankai University, Nankai 300071, China

Sustainability, 2025, vol. 17, issue 14, 1-22

Abstract: Prior research often portrays Corporate Social Responsibility (CSR) as a coercive institutional force compelling firms to passively conform for legitimacy. More recent studies, however, suggest firms actively pursue CSR to gain sustainable competitive advantages. Yet, how and when CSR buffers firms against adverse shocks of crises remains insufficiently understood. This study addresses this gap by using multiple regression analysis to examine the buffering effects of CSR investments during the COVID-19 crisis, which severely disrupted capital markets and firm valuation. Drawing on signaling theory and CSR literature, we analyze the stock market performance of China’s A-share listed firms using a sample of 2577 observations as of the end of 2019. Results indicate that firms with higher CSR investments experienced significantly greater cumulative abnormal returns during the pandemic. Moreover, the buffering effect is amplified among firms with higher debt burdens, greater financing constraints, and those operating in regions with stronger social trust and more severe COVID-19 impact. These findings are robust across multiple robustness checks. This study highlights the strategic value of CSR as a resilience mechanism during crises and supports a more proactive view of CSR engagement for sustainable development, complementing the traditional legitimacy-focused perspective in existing literature.

Keywords: corporate social responsibility; COVID-19; market performance; signaling theory; sustainability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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