The Owas method allows the assessment of the physical load derived from the postures adopted during work. Unlike other postural assessment methods such as Rula or Reba, which assess individual postures, Owas is characterized by its ability to globally assess all the postures adopted during the performance of the task. On the other hand, Owas provides less precise assessments than the previous ones. It is this ability to consider multiple postures over time, which is why Owas, despite being a relatively old method, continues to be one of the most widely used in the evaluation of postural load.