Introduction. Methods. Participatory Ergonomics has been reported to be an effective method for implementing ergonomic interventions . Part of this effectiveness can be contributed to its potential worker “buy-in” and exchange of information created through worker participation [1, 3].
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Participatory Ergonomics has been reported to be an effective method for implementing ergonomic interventions . Part of this effectiveness can be contributed to its potential worker “buy-in” and exchange of information created through worker participation [1, 3].
Utilization of participatory ergonomics programs can also produce changes that result in significant reduction of physical loading and improvement in productivity if the program provides an avenue to identify root causes of the problems and opportunities to build solutions.
This poster demonstrates the effectiveness of these ergonomic changes in reducing or eliminating the root causes identified during the Ergonomic Change Process.
During the solution building phase of this process, the ECT proposed interventions to the delivery trailer and the mall-cart that would overcome the root causes of high injury rates and reduce the physical exposures that were determined in step 2 of the ergonomic process. Risk factors associated with the process included multiple handling of heavy boxes, frequent climbing in an out of the truck trailer, pulling heavy cart one handed, safety issues of vision and stopping the cart in a crowded mall. The solutions involved changes to the truck, mall cart and work method. The group developed specifications for a new hand cart, prototyped and then tested it.
The evaluation was done utilizing pre-intervention and post-intervention videos that were then analyzed using a biomechanical model (4D WATBAK ERGOWATCH, University of Waterloo, Waterloo, Canada). In addition, one-minute surveys (brief questionnaires) that the ECT utilized as an evaluation process were also examined.
A CASE STUDY ON THE IMPACT OF AN ERGONOMIC CHANGE TO THE MALL DELIVERY TRAILER AND REDESIGN OF A MALL CART USED FOR DELIVERY IN THE TRANSPORTATION SECTOR
An Ergonomics Change Team (ECT) consisting of management, workers and union from a courier company were assembled and trained by researchers on the University of Waterloo’s Ergonomic Change Blueprint  in basic ergonomic principles and various ergonomic assessment tools. This group then followed the 6 steps of the ergonomic change blueprint and made interventions as they determined appropriate. One of the researchers acted as a facilitator for the group for 18 months to ensure understanding of the process and that appropriate tools were being utilized.
Reid, Michael J1, Enns, Jennifer1, Frazer, Mardon1, Wells, R ichard1,
Members of an Ergonomic Change Team of a transport sector company utilised a participatory ergonomic approach to address several problems associated with courier mall delivery. The interventions developed were an addition of a tail lift to a delivery transport trailer and an addition of a locking brake on the mall-cart. The impacts of these changes included decreased cumulative L4-L5 output measures and shoulder moment during material handling seen through the elimination of double handling of boxes as well as elimination of the safety hazard of entering and exiting the trailer. A proposed mall cart redesign is also discussed demonstrating further potential improvements. Overall, the ECT introduced an ergonomic change that eliminated root causes of the problems, reduced the risk factors for injury.
1-University of Waterloo
Department of Kinesiology
Results and Discussion
0: Start Up:
a) Establish Support
b) Team Formation
c) Initial Training
H+S Management Program
Participation and Consultation
6: Adopt Solution
7a: Use Feed--back from Previous designs and plants
1: Identify Opportunities for Improvement:
Health Outcome, Risk Factor Identification and Integration
7b: Employ Ergonomic Design Criteria and Purchasing Guidelines
1. St-Vincent, M., Chicoine, D., & Beaugrand, S. (1998). Validation of a participatory ergonomic process in two plants in the electrical sector. Ergonomics. 21, 11-21.
2. Wells, R., Norman, R., Frazer, M., & Laing, A. (2000). Ergonomics Program Implementation Blueprint. Ergonomics and Safety Consulting Services, University of Waterloo, Waterloo, Ontario.
3. Wilson, J.R., & Haines, H.M. (1997). Participatory ergonomics, in G. Salvendy (ed.), Handbook of Human Factors and Ergonomics, 2nd Edn (New York: Wiley), 490-513
5: Evaluate Prototype
2: Assess Ergonomic Risk Factors and Priorize Jobs for Improvement
4: Implement Prototype
3: Build Solutions
Ergonomics Program Management
The authors acknowledge the funding and active support of the Workplace Safety and Insurance Board, the Institute for Work and Health (Toronto, Canada). Also many thanks to the participating workplace groups for their hard work and support of this project.