The workshop covers ICF-CY as a framework in collaborative problem solving together with families and in preschool. A short introduction to ICF-CY will be presented. The workshop will be based on case studies where the participants will use ICF-CY as a tool in assessment and intervention. The model for collaborative problem solving developed by the CHILD group includes problem formulations, problem explanations, goal setting, design of methods, implementation and follow-up. The tool uses checklists based on ICF-CY for formulation of difficulties and problems in terms of activity and participation, problem explanations in terms of body structures and functions and environmental factors. An individual intervention plan for a child with disability based on functioning in everyday life is developed based on the assessment. The utility and feasibility of ICF-CY as a tool and a common language in early childhood intervention will be discussed.