This study aims to explore the association between self-reported secondary traumatization and personal growth in a sample of Belarusians rescue workers, focusing on the mediating role of 2 socio-interpersonal processes (disclosure and co-rumination). In a cross-sectional survey, self-reported posttraumatic growth and secondary traumatization were assessed in a sample of 168 rescue workers. Posttraumatic growth was positively linked to the extent of secondary traumatization, likewise disclosure and co-rumination were positively linked to posttraumatic growth. Mediation analyses revealed that the association between secondary traumatization and posttraumatic personal growth was mediated by disclosure and co-rumination. The results thus are in favor of a socio-interpersonal perspective on posttraumatic adjustment.