The Effectiveness of ESG in Alleviating Financial Constraints Across Firm Life Cycle Stages

This study examines whether and when environmental, social, and governance (ESG) performance alleviates financial constraints, focusing on firm life cycle heterogeneity. Using a panel of Korean listed firms from 2011 to 2021, we employ industry-and-year fixed-effects regression to identify the empirical relationship of ESG on financial constraints proxied by the KZ index or Z-score. We classify firm life cycle stages using both retained-earnings- and cash-flow-based measures to capture distinct dimensions of firm development. We document that ESG performance significantly relaxes financial constraints, with governance being the most influential sub-dimension in our sample. Importantly, this effect is highly state-dependent: ESG is largely ineffective in the introduction stage but becomes economically and statistically significant from the growth stage onward, with the strongest impact observed in early-growth and declining firms. Our findings challenge the notion of uniformly priced ESG benefits and demonstrate that ESG operates as a contingent financial mechanism whose effectiveness critically depends on firm life cycle stages.