PurposeThis study examines how ethical leadership (EL) influences followers' willingness to conduct unethical pro-organizational behavior (UPB) via reciprocity beliefs at the individual level and political climate at the group level.Design/methodology/approachTwo-point survey data were collected from 423 Chinese followers from 81 groups, and multilevel structural equation modeling was conducted to test the hypotheses.FindingsIndividual-level EL unintentionally increases follower UPB willingness by fostering reciprocity beliefs, while group-level EL intentionally reduces follower UPB willingness by controlling the political climate. The political climate plays both a cross-level moderated mediation role and a mediated moderation role between EL and UPB.Practical implicationsWhen seeking to decrease followers' intention to conduct UPB, managers are advised to use individual-level EL with care when the focus is on reciprocity, and they should consider using group-level EL more when the focus is on controlling political climate.Originality/valueThe study supports two distinct mediating mechanisms by examining individual-level EL (as a moral person) vs group-level EL (as a moral manager) on UPB, thereby revealing the reason for the mixed effects of EL on UPB.