Tasks commonly performed by block, brick and tile workers in the masonry industry were
reviewed, and those tasks with potential work-related musculoskeletal disorder (WMSD)
hazard exposures. Hazard control examples for reducing these risk factor exposures were
identified. The implication of this paper is to help employers and workers comply with the
new rule by identifying masonry-specific WMSD hazards that may exceed the limits specified
in the rule, and to suggest possible controls for those hazards. The study showed that
symptoms from the musculoskeletal system were common among the construction workers
studied. Back, shoulders, wrists/hands, and knees symptoms were found to be the most
prevalent problems among the workers. High rate of shoulder problems could be attributable
to awkward posture and high rate of back problems could be related to the long awkward
posture of this region. These implies that any interventional program for preventing or
reducing musculoskeletal problems among the workers should focus on reducing physical
exposure to the MSDs risk factors of these regions.
Based on the results there were various factors that have been investigated as work-related
ergonomics stressors for disorders, but it is the physical factors that are suggested to
contribute most to incidence of symptoms. In respect of the physical factors, there is medium
evidence of a causal association for kneeling/squatting and heavy lifting. The results also
demonstrate that awkward working postures and repetitive work were found to be the major
risk factor that the workers were encountered. Since the postural problems have been found
to be largely causing factor, the following corrective measures could be taken in
consideration for reducing exposure level and consequently preventing WMSDs among
construction workers: using seats with appropriate heights, conducting workers training
program on working posture and devising an appropriate work-rest cycle.
Based on the findings, it was concluded that WMSD occurred in high rate in construction
work. Workers’ level of exposure to WMSDs risks was high. Taking corrective measures for
reducing risk level into consideration seemed essential. Any ergonomics intervention
program in the workplace should be focused on eliminating awkward postures of shoulders,
back, and neck.