<p>Schizophrenia is a severe and disabling mental illness characterised by impairment in multiple domains of life, such as functionality, social, emotional, behavioural, thinking, economic, and cognitive. There will be high negative expressed emotions and caregiver burden in the families of persons with schizophrenia, which further leads to disruption in family dynamics, communication deviance, and distress in the caregivers. To demonstrate how the person-in-environment approach can be used in family casework intervention to address the negatively expressed emotion and caregiver burden in a young adult with schizophrenia. The case study used the person-in-environment approach to illustrate the family casework intervention. Tools used: the psychiatric social work case record proforma assessed the family dynamics. The Meyer-Gross proforma was used to evaluate the history of present illness, family history, personal history, and premorbid history. IDEAS was used to assess her functionality. The Psychosocial assessment revealed that the leading personal and environmental concerns of this family were a single mother, having a single child, being a single caregiver for the patient, having poor knowledge about the illness, poor supervision of medications, drug non-adherence, caregiver burden, criticality, and an inadequate social support system. After psychiatric social work interventions, there were improvements in the caregiver's knowledge about the illness and reduced expressed emotion and caregiver burden.</p>