Kadefors Roland, Ph. D Professor describes in terms of physical load, welding rated number 8, of all occupations reporting exposure to daily lifting of heavy materials weighing 15 kg or more (39%). Flexed or twisted postures were reported by 49% of the welders (rated 9th of all occupations), whereas 40% of them reported work with the hands at or above shoulder level (rated 7th). This very particular strain on the musculoskeletal system comes from awkward postures and the static character of welding work. Musculoskeletal complaints and disorders in welders give rise to the following points: a) musculoskeletal symptoms are prevalent in welders; b) welding work entails an increased risk of shoulder pain due to inflammatory reactions in the rotator cuff. It is static nature of work that causes elevated risk for chronic pain in the shoulder and neck. Static work is considered ergonomically unsound and has firm physiological basis. It concludes that welders run a high risk to acquire occupational diseases in the musculoskeletal system. [3]