PurposeThis study examined how inclusive leadership in the workplace promotes proactive behavior in employees based on self-determination theories and a model of motivation for proactive behavior.Design/methodology/approachUsing a sample of 270 employees from various provinces in China, we investigated the relationship between inclusive leadership (measured at Time 1), workplace gratitude (measured at Time 1) and proactive behaviors (measured at Time 2). To test our hypotheses, SEM analysis was conducted to measure the path coefficients, followed by bootstrapping analysis to assess the indirect impacts of gratitude at work.FindingsThe results suggest that inclusive leadership could enhance subordinates’ propensity to be grateful, which in turn will increase the frequency of their proactive behaviors.Originality/valueFirst, the evidence presented further validates the proposed association between inclusive leadership and proactive behavior, and it also enriches related theories. Second, our study introduced workplace gratitude as a mediator, deepening the understanding of the mechanisms linking inclusive leadership and proactive behavior.