The aim of the present study was to investigate how Swedish occupational therapists describe their work with persons suffering from cognitive impairment following acquired brain injury. A qualitative descriptive approach was used and interviews were conducted with 12 occupational therapists working in community and county council care. Qualitative content analysis was used and revealed three main themes: (1) "To make the invisible visible", (2) "To collaborate-a prerequisite for success", and (3) "Dilemmas to handle". The findings showed a complex scenario where the occupational therapists worked to make the cognitive impairments visible to themselves, the clients, and persons close to the client. Collaboration was perceived as a key factor. The dilemmas concerned different aspects in the rehabilitation process, which affected the occupational therapists' work with the clients. Identified areas in need of improvement are prioritizations and additional education regarding both intervention methods and theory. A reluctance to use standardized assessments was expressed and research that identifies and overcomes those hindrances in clinical practice is needed. Therapeutic use of self was described as important. To understand and illuminate the occupational therapists' comprehension of the concept further research is required.