Different sources can lead to modifications at a workstation such as external (out of control of the company) and internal (intended by the company) sources. Modifications from both source types could potentially influence the level of exposure of employees to different risk factors of work-related musculoskeletal disorders. The use of different ergonomic evaluation methods can help understand the influence of modifications at a workstation and whether they have a positive or negative impact. This is shown through an example from the fish processing industry.
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