Health care providers (n = 1,957) in Canada participated in a project to assess an intervention to enhance workplace civility. They completed surveys before the intervention, immediately after the intervention, and one year later. Results highlighted three patterns of change over the three assessments. These data were contrasted with data from control groups, which remained constant over the study period. For workplace civility, experienced supervisor incivility, and distress, the pattern followed an Augmentation Model for the intervention groups, in which improvements continued after the end of the intervention. For work attitudes, the pattern followed a Steady State Model for the intervention group, in that they sustained their gains during intervention but did not continue to improve. For absences, the pattern reflected a Lost Momentum Model in that the gains from preintervention to postintervention were lost, as absences returned to the preintervention level at follow-up. The results are discussed in reference to conceptual and applied issues in workplace civility.