Objectives: Work engagement is critical in organizational development as it improves and enhancesperformance and innovative behavior. Work engagement could be influenced by individual traits, workenvironment, and other factors. Hence, a need was felt to investigate whether and how rumination, as apersonality trait, influences work engagement. Methods: This study expanded on previous research onrumination and work engagement by introducing emotional intelligence to build mediating and moderatingmodels. The study focused on rumination affecting work engagement and explored emotional intelligencefor its role in mediating and moderating the relationship between rumination and work engagement. Aquestionnaire was distributed to a sample of 930 employees of Chinese central enterprises were identifiedto investigate the relationship between rumination, emotional intelligence, and work engagement. Thefindings were calculated on Ruminative response scale, Work-engagement scale, and Emotional intelligencescale, Results: Results showed that rumination had a significant negative predictive effect on workengagement (β = −0.35, P < 0.001). Moreover, emotional intelligence mediated (B = −0.39, P < 0.001) andmoderated (B = −0.16, P = 0.024) the effect of rumination on work engagement. Conclusion: This studyenriches the understanding of work engagement by quantitatively demonstrating the influence of emotionalintelligence on the relationship between rumination and work engagement. This study has implicationsfor enterprises to improve the level of mental health and work engagement among their employees.