Abstract
Objectives: To assess the impact of a workplace ergonomic program to reduce musculoskeletal burden among newspaper employees and to understand relationships among participation, risk factor changes and health status within an employee cohort. Methods: We conducted repeat cross-sectional surveys, with 1,003 employees from all major departments in 1996 and 813 in 2001, generating a cohort of 433 participants in both surveys. Elements of the ergonomic program included employee RSI (repetitive strain injury) training, pro-active assessment of workstations and workstation modifications, and encouragement of early treatment through on-site physiotherapy. Potential risk factors included biomechanical and work organizational aspects of office work. Health status measures included pain intensity and the Work-Disability of the Arm, Shoulder, and Hand (DASH). Repeat cross-sectional analyses incorporated modifications for shared variance. For the cohort, a theory of change informed path analyses using MPLUS. Results: Among respondents in 2001, 69% reported participation in RSI training and 56% had workstation assessments. Among those with pain, 57% had consulted a health practitioner, including the on-site physiotherapist. In repeat cross-sectional analyses, the proportion reporting moderate pain or worse, at least once per month or for longer than 1 week, declined from 20 to 16% (p=0.01). Among the cohort, pain intensity and work disability in 1996 were the strongest predictors of 2001 health status (both p<0.001). Stable or increased supervisor awareness and concern about RSI was associated with decreased pain in 2001(p<0.01). Participation in RSI training was associated with increases in decision latitude (p<0.05), which themselves were associated with decreased work disability in 2001 (p<0.05). Increased time mousing was associated with increases in work disability (p<0.05). Conclusions: Implementation of a worksite ergonomics program was associated with a reduction in frequent and severe pain in the workforce. Changes in work disability were affected by multiple factors.
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Acknowledgments
The authors would like to acknowledge contributions by: consultant Ben Amick and other members of the Worksite Upper Extremity Group at the Institute for Work & Health (Dorcas Beaton, Carol Kennedy, Hyunmi Lee, Anne Moore, Michael Polanyi, Harry Shannon, Peter Subrata, Michael Swift, Dwayne van Eerd); labor and management members of the Repetitive Strain Injury (RSI) Committee at the workplace; and participants in the study. The Institute for Work & Health, an independent not-for-profit research organization, sponsored the study and in turn receives support from the Ontario Workplace Safety & Insurance Board. Specific funding for the evaluation was provided by the RSI Committee and the US National Institute for Occupational Safety and Health/National Institutes of Health under Research Grant #5 R01 OH003708-03. None of the authors has ongoing relationships with either the union or company involved.
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Cole, D.C., Hogg-Johnson, S., Manno, M. et al. Reducing musculoskeletal burden through ergonomic program implementation in a large newspaper. Int Arch Occup Environ Health 80, 98–108 (2006). https://doi.org/10.1007/s00420-006-0107-6
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DOI: https://doi.org/10.1007/s00420-006-0107-6