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Background and Aims The aim of this study was to analyse the impact of chronic pain due to osteoarthritis of hip and knee as the cause of disability retirement in Croatia, six year follow-up.Methods Data was collected from the disability pension register in Medical Assessors Department of Ministry of Labor and the Pension System for period 2019–2024.Results During 6 years (2019–2024), 8,7% of patients with musculoskeletal diseases assessed as having complete or partial loss of working ability, were patients with chronic osteoarthritic pain of hip or knee: 44% hip, 49,1% knee, and 6,9% were surgically treated due to osteoarthritic pain of hip or knee. Complete loss of working ability was determined in 68% of patients, while 32% were assessed as having partial loss. Concerning complete loss of working ability, 49% were patients with chronic osteoarthritic pain of hip, 44,7% with osteoarthritic pain of knee and 6,3% were surgicaly treated patients and 73% were male, comparing to partial loss where patients were assessed as: 33% were patients with osteoarthritic pain of hip, 59% with osteoarthritic pain of knee and 8% were surgicaly treated patients, 37% were female. There was no difference in age: median age was 57,5 (hip) and 58,5 (knee), or eduacation: 47% low education, 51% secondary education, and 2% with universitiy diploma.Conclusions Chronic pain due to osteoarthritis of hip and knee has significant impact on long term disability assessment and disability pension in Croatia.