ENThe aim of the study was lo evaluate the disability indexes of children and employable age disabled people in Lithuania and Kaunas district (in 2007 ). Conclusions: 1. The main causes of primary' disability of children in Kaunas district and all over the Lithuania (in 2007) were as follows: mental disorders and congenital diseases. 2. In the cities of Kaunas district the first cause of primary disability of young people (from 18 to 45 years of age) was bone muscular system and conjunctive tissue diseases and the second was cardiovascular diseases. The main causes of primary disability of young people in Lithuania and villages of Kaunas district were bone muscular system and conjunctive tissue diseases and traumas. 3. Among the middle age disabled persons (from 45 years of age to the retired age) in Lithuania and Kaunas district the main causes of primary disability were cardiovascular and bone muscular system and conjunctive tissue diseases.