Correlation Analysis of Physical Discomfort and Ergonomic Assessment of Saw Workbench in a Woodworking Process

Woodworking is an art requiring skill, precision, and patience. The woodworking industry in Quezon Province has been around for many years and has provided opportunities to workers in the community. Many woodworking companies in Lucena City uses a non-standard design of a saw workbench, this leads to work-related musculoskeletal disorders in developing countries like the philippines. (20) workers of ABC Company located in Lucena City Quezon Province, were assessed through observation using the REBA and RULA to identify the level of risks associated with the saw workbench process. The researchers interviewed the workers using the Cornell Musculoskeletal Discomfort Questionnaires to assess their physical discomfort. The RULA and REBA results showed very high-risk levels based on the different postures associated with the tasks, while the CMDQ results revealed that three (3) out of twenty (20) workers experience medium risk, CMDQ results revealed that three (3) out of twenty (20) workers experience medium risk, fourteen (14) out of twenty (20) workers experience high risk, while the remaining three (3) out of twenty (20)workers experience medium risk, fourteen (14) out of twenty (20) workers experience high risk, while the remaining three (3) workers experience very high risk primarily in the lower back (9.49%), upper arm (4.83%), and right knee (4.43%). The correlation analysis using the Spearman-Rho showed a significant relationship between the RULA, REBA, and CMDQ at 0.05 significance level. Thus, the researchers use the anthropometric measurements of Filipino workers used in [7], which could help reduce work-related musculoskeletal disorders and increase the produce of the machine.