Human rights advocates are routinely exposed to direct and secondary trauma. In addition, a growing body of research has found that trauma exposure in human rights work is associated with depression, burnout, and posttraumatic stress disorder (PTSD) in human rights advocates. Despite the potential mental health risks associated with advocacy, little is known about the ways in which organizational and individual factors contribute to mental health symptoms, such as PTSD, in this population. Human rights advocates (N = 346) completed an online survey assessing access to psychological services, perceived organizational encouragement of support seeking, occupation-related appraisals, and symptoms of PTSD. Structural equation modeling revealed an indirect association between access to psychological services and lower levels of PTSD through perceived organizational encouragement of support seeking and less negative occupation-related appraisals. This study is the first to demonstrate that access to mental health support in human rights organizations may contribute to a reduction in PTSD symptoms when advocates feel a sense of efficacy and support from their organization to seek help. (PsycInfo Database Record (c) 2020 APA, all rights reserved).