The Covid 19 crisis inevitably led to the rise in anxiety levels of general public and has caused increased stress levels and has changed the circumstances in people’s lifestyle. To examine the application of case work based on a cognitive behavioural approach concerning working with a client experiencing adjustment problems in covid 19 pandemic situation, this single-subject case study design was adopted. Based on the assessment, psychiatric social work intervention was provided to client and family members. Pre- and postassessment was done to see the effectiveness of psychiatric social work intervention in person having adjustment disorder. Assessments were done using the Beck depression inventory (BDI), Beck anxiety inventory (BAI), perceived stress scale (PSS), World Health Organisation quality of life (WHOQOL) BERF and family assessment proforma. Client’s level of understanding about the illness was improved and stress, anxiety and depressive level were significantly reduced. The outcome of the case study shows that the cases with adjustment problems in pandemic situation can be effectively seen using cognitive behavioural case work approach.