The Effects of Ergonomic The Effects of Ergonomic Workstation Changes on Workstation Changes on Physical and Psychosocial Physical and Psychosocial Factors in Apparel Factors in Apparel Manufacturing Manufacturing Julianne Natale, Richard Wells, Mardon Frazer, Michael Kerr, Sue Ferrier, Syed Naqvi, Peter Subrata University of Waterloo University of Western Ontario, Institute for Work and Health, Occupational Health Clinics for Ontario Workers
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The Effects Of Ergonomic Workstation Changes On Physical And Psychosocial Factors In Apparel Manufacturing
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The Effects of Ergonomic The Effects of Ergonomic Workstation Changes on Workstation Changes on Physical and Psychosocial Physical and Psychosocial Factors in Apparel Factors in Apparel ManufacturingManufacturing
Julianne Natale, Richard Wells, Mardon Frazer, Michael Kerr, Sue Ferrier, Syed Naqvi, Peter Subrata
University of WaterlooUniversity of Western Ontario, Institute for Work and Health,Occupational Health Clinics for Ontario Workers
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PurposePurpose
• To compare physical and psychosocial outcomes of workers who experienced ergonomic workstation changes in two clothing plants to their coworkers who did not
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The Clothing IndustryThe Clothing Industry
• Prevalence of WMSDs in sewing machine operators is higher than any other occupational group
• Sewing is highly repetitious, requiring substantial force and constrained postures
• Strong need for low-cost, quick solutions to reduce these risk factors
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Study IStudy I
• Three clothing plants, 600 workers• Workstation changes made in two
plants • Questionnaire administered before and
after ergonomic changes• Questionnaire: 16 variables measured
– Productivity– Pain intensity (Von Korff et al. 1992, Smith et al.
2001)
– Impact of pain (WLQ: Lerner et al. 1997)
– Fatigue on job (Borg 1990, Punnett 1997)
– Job content (Karasek 1994, Kerr 2002)
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Measuring Pain IntensityMeasuring Pain Intensity
Upper Upper BackBack
Right Shoulder Right Shoulder
Right Upper Right Upper ArmArm
Mid to Mid to Lower BackLower Back
Right Right ForearmForearmRight Right WristWristRight Right HandHand
Right Thigh
Right Lower Leg or Foot
NeckNeck
Left Left ShoulderShoulder
Left Upper Left Upper ArmArm
ButtocksButtocks
Left Left ForearmForearm
Left Left WristWrist
Left HandLeft Hand
Left Left ThighThigh
Left Left Lower Lower Leg or Leg or
FootFoot
1=mild
2=moderate
3=severe
4=unbearable
• Pain in last 7 days • Average pain in 6 months • Worst pain in 6 months