The high statistical significance of the relation between posture scores A and B with the regional pain, ache and discomfort indicates that the RULA scoring is sensitive to the changes from an acceptable to an unacceptable working posture based on the criteria which have been set out in the development of RULA. It also reinforces the importance of assessing the whole region as well as the individual body parts because the impact of musculoskeletal loading has important consequences for the function of the unit as a whole.