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Janitor ergonomics and injuries in the safe workload ergonomic exposure project (SWEEP) study
Adam Schwartz1, Susan G Gerberich1, Hyun Kim1
1Midwest Center for Occupational Health and Safety Education and Research Center, Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, MN, USA.
Applied Ergonomics
|August 19, 2019
Summary
Janitors
Area of Science:
- Occupational Health
- Ergonomics
- Public Health
Background:
- A janitor's union raised concerns about the link between daily workload and occupational injuries.
- Researchers at the University of Minnesota investigated this concern.
Purpose of the Study:
- To determine if janitors' ergonomic workload is associated with their risk of occupational injuries.
Main Methods:
- A questionnaire surveyed janitors about tasks, exposures, and injuries over two six-month periods.
- Quantitative ergonomic assessments included Borg Perceived Exertion (Borg) and Rapid Entire Body Assessment (REBA) scores for a subset of janitors (n=30).
- Descriptive and multivariable regression analyses were performed.
Main Results:
- Eight common janitorial tasks were identified, with all average REBA scores indicating high-risk levels.
- Repetitively emptying small trash cans was significantly linked to injuries.
- Higher standardized ergonomic workload, based on task frequency and REBA/Borg scores, correlated positively with injury occurrence.
Conclusions:
- Standardized ergonomic workload is positively associated with occupational injury occurrence in janitors.
- Findings support further research and the development of targeted intervention strategies to mitigate risks.
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