Drawing on the inducement–contribution employment model, this article examines the mediation of affective commitment on the relationship between hierarchical plateau and turnover intention and how job content plateau moderates the relationship. The hypotheses are tested in a sample consisting of 288 Chinese employees from a variety of industries. The results of the hierarchical multiple regression analyses show that hierarchical plateau is positively related to turnover intention, and affective commitment fully mediates the relationship. The moderated mediation analysis reveals that the mediation of affective commitment on hierarchical plateau–turnover intention relation is conditional upon job content plateau. Specifically, job content plateau weakens rather than strengthens the effect of hierarchical plateau on affective commitment and the resultant turnover intention. Based on the findings, theoretical and practical implications of this study and directions for future research are discussed.