3. RESULTS AND DISCUSSIONS
3.1 Work observations
From observations, it was seen that the workers constantly bend and twist their backs head and
shoulders in picking and placing the loads. The hands and wrist were frequently used in carrying the tasks at
undesirable positions.
Based on the photographs and video taken, the angle of movements of the trunk, neck, lower arm,
wrists and positions of the legs and upper arms were estimated. These values are required in establishing the
scores in REBA. Photographs of the different tasks carried out are found in Figures 1 to 5.