Employees have extended periods of standing which creates loading on the muscles of the back and legs. This is consistent with the development of musculoskeletal injury and generalized fatigue. In addition, static standing can lead to venous pooling of blood in the legs which is consistent with increased fluid pressure in the legs and the development of varicose veins. Provide foot rests 4 to 6 inches above the floor allowing employees to rest one leg while standing. Foot rests are believed to alleviate back stress as well as minimize foot fatigue.
Employees use a hand held scanner to identify shipping totes, boxes, and shipping racks.
This gun, as depicted on the video footage, has a piston grip type of handle and a trigger that must be repeatedly activated incorporated into the handle. The handle appears to be made from a slick plastic material. The employees severely deviate their wrists and abduct their elbow away from the torso while performing this operation. The composition of the handle forces employees to apply significant finger force to control the scanner during operation and the use of a trigger requires frequent index finger activation. Employees perform repeated ulnar deviations in excess of 30 degrees and abduct the elbow up to 50 degrees away from the torso.