The range of movement for each body part is divided into sections according to criteria derived through interpretation of relevant literature. These sections are numbered so that the number 1 is given to the range of movement or working posture where the risk factors present are minimal. Higher numbers are allocated to parts of the movement range with more extreme postures indicating an increasing presence of risk factors causing load on the structures of the body segment. This system of scoring each body part posture provides a sequence of numbers which is logical and easilvremembered.