Static standing can also lead to pain and soreness of the legs and back as well as circulatory problems such as varicose veins. Stacks of product proceed from the Collectors work area where they are divided roughly in half and the interior plugs are pushed out. The stack is held in one hand while force is applied to the interior plug, using the thumb, to push out the unwanted material. After the plug has been removed the original stack is reformed and sent down the line for further processing. Using thumb force to remove the plug from a stack consisting of multiple parts strains the musculoskeletal entities of the fingers and the thumb leading to muscle strain, tendinitis, tenosynovitis, and stenosing tenosynovitis such as DeQuervain's syndrome.
Employees stand for most of the task time.