Working Position, Work Duration, Ergonomics Knowledge Level on The Risk of Musculoskeletal Disorders among Informal Workers in Slipper Sponge Sandal Manufacturing
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Sari Arum Prasasti
Suwoyo Suwoyo
Ekowati Retnaningtyas
Abstract
The informal sector may be associated with an increased risk of occupational diseases or
accidents. This is due to the absence of an ergonomic workplace, insufficient attention
to occupational safety and health, and inadequate supervision. The purpose of this study
was to determine the effect of working position, work duration, and level of ergonomic
knowledge on the risk of Musculoskeletal Disorders (MSDs) among informal workers
in slipper sponge sandal manufacturing. The research design in this study was cross-
sectional. The number of respondents was 33. Data collection used field observation and
the completion of questionnaires using the REBA (Rapid Entire Body Assessment),
Nordic Body Map Questionnaires, and questionnaires measuring ergonomic knowledge.
Data analysis used bivariate and multivariate analysis. Multivariate analysis used
multiple linear regression with α=0.05. Results showed that 63.6% respondents had a
high risk of MSDs. Based on bivariate analysis, working position (X1) obtained
p=0.018, work duration (X2) p=0.018, ergonomic knowledge level (X3) p=0.023.
Multivariate analysis on X1, X2, and X3 got p=0.000. In conclusion, Working position,
work duration, and ergonomic knowledge level influence partially and simultaneously
the risk of musculoskeletal disorders among informal workers in slipper sponge sandal
manufacturing.
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Copyright (c) 2026 Sari Arum Prasasti, Suwoyo Suwoyo, Ekowati Retnaningtyas
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