This study explored the effect of career plateau on UPB, the mediating role of challenge-hindrance
stress and the moderating role of moral disengagement in this relationship. The results showed that there existed
positive correlations between career plateau, challenge stress, moral disengagement and UPB, and negative
correlation between hindrance stress and UPB. Challenge stress, but not hindrance stess, partially mediated the
influence of career plateau on UPB. Moreover, the indirect effect of career plateau on UPB through challenge
stress was moderated by moal disengagement, in that the indirect effect of challenge stress has been reevealed in
individuals with high moral disengagement, but not for individuals low in moral disengagement.