Musculoskeletal disorders are the leading occupational disease in industrialized countries. The symptoms are varied, their multiple risk factors, work organization may be involved. Musculoskeletal disorders affect the muscles, tendons and nerves of the mainly upper limbs (neck, shoulder, elbow, wrist and hand). Pain or functional impairment are common to all these disorders.The proposed study is part of an active preventive approach in addressing current employees with latent or symptomatic upper extremity MSD linked to a hyper solicitation. This study provide them 6 days SPA therapy (before or after work) combined with a health education program to help improve their lives over time.