Consumer participation typically reduces consumer skepticism and leads to a positive response to corporate social responsibility (CSR) activities. Although many companies are encouraging consumers to participate in CSR activities, there is still insufficient research on the effectiveness of this strategy. That is, prior studies do not provide guidelines on the effectiveness of requiring consumers to participate in CSR activities. We examine the impact of the required participation effort on CSR participation intention, focusing on the differences in consumers' perception of a warm glow feeling and costs according to their construal level. For this study, 107 participants were recruited using Amazon Mechanical Turk. We tested hypotheses using a 2 (CSR participation effort) × 2 (construal level) between-subject analysis of variance (ANOVA), planned contrast analysis, and mediation analysis. The results indicate that for consumers with high construal levels who perceive participation efforts as warm glow, participation efforts have a positive impact on CSR participation intention. However, for those with low construal levels who perceive participation efforts as costs, high required efforts have a negative impact on their participation intention. Finally, we discuss the implications of these results, discuss the limitations, and suggest future research directions.