SOME MORE HINTS
— There are two easy ways to find out about unnatural
postures. First, ask the workers whether they feel
pain or discomfort during work. Second,watch the
work operations and find those done by stretching,
bending or twisting the body.
— The optimal heights for frequent work operations
are: for standing work between waist level and
heart level; for sitting work between elbow level
and heart level.
— Workers get tired if work operations are always
done at the same place, even at the optimal place.
Variations in work posture are essential.Therefore
avoid repetitive tasks that need to be done in the
same posture all the time.