The Oncology Social Worker (OSW) provides psychosocial services to patients, families, and caregivers affected by cancer diagnosis and treatment throughout the cancer continuum. As part of a multidisciplinary treatment team, the OSW assesses needs and provides interventions to maximize patient functioning, helps patients navigate healthcare resources to reduce distress, and supports survivorship. The role requires knowledge of the psychosocial, emotional, and financial effects of cancer and of resources that can improve cancer care.