Do ergonomics improvements increase computer workers' productivity?: an intervention study in a call centre

This paper examines whether improving physical ergonomics working conditions affects worker productivity in a call centre with computer-intensive work. A field study was conducted at a catalogue retail service organization to explore the impact of ergonomics improvements on worker production. There were three levels of ergonomics interventions, each adding incrementally to the previous one. The first level was ergonomics training for all computer users accompanied by workstation ergonomics analysis leading to specific customized adjustments to better fit each worker (Group C). The second level added specific workstation accessories to improve the worker fit if the ergonomics analysis indicated a need for them (Group B). The third level met Group B requirements plus an improved chair (Group A). Productivity data was gathered from 72 volunteer participants who received ergonomics improvements to their workstations and 370 control subjects working in the same departments. Daily company records of production outputs for each worker were taken before ergonomics intervention (baseline) and 12 months after ergonomics intervention. Productivity improvement from baseline to 12 months post-intervention was examined across all ergonomics conditions combined, and also compared to the control group. The findings showed that worker performance increased for 50% of the ergonomics improvement participants and decreased for 50%. Overall, there was a 4.87% output increase for the ergonomics improvement group as compared to a 3.46% output decrease for the control group. The level of productivity increase varied by the type of the ergonomics improvements with Group C showing the best improvement (9.43%). Even though the average production improved, caution must be used in interpreting the findings since the ergonomics interventions were not successful for one-half of the participants.

[1]  E Grandjean,et al.  VDT Workstation Design: Preferred Settings and Their Effects , 1983, Human factors.

[2]  U O Bergqvist,et al.  Video display terminals and health. A technical and medical appraisal of the state of the art. , 1984, Scandinavian journal of work, environment & health.

[3]  Steven L. Sauter,et al.  Promoting health and productivity in the computerized office , 1991 .

[4]  A. Happ,et al.  An Investigation of Health Complaints and Job Stress in Video Display Operations , 1981, Human factors.

[5]  Pascale Carayon,et al.  Examining the relationship between job design and worker strain over time in a sample of office workers , 1995 .

[6]  B. Uo,et al.  Video display terminals and health. A technical and medical appraisal of the state of the art. , 1984 .

[7]  Employee comfort, satisfaction and productivity: recent efforts at Aetna , 1991 .

[8]  Ben-Tzion Karsh,et al.  The efficacy of workplace ergonomic interventions to control musculoskeletal disorders: A critical analysis of the peer-reviewed literature , 2001 .

[9]  Joseph Prokopenko,et al.  Productivity Management: A Practical Handbook , 1987 .

[10]  E Grandjean,et al.  Preferred VDT workstation settings, body posture and physical impairments. , 1984, Applied ergonomics.

[11]  Pascale Carayon,et al.  New technology, automation, and work organization: Stress problems and improved technology implementation strategies , 1995 .

[12]  Raymond A. Katzell,et al.  A guide to worker productivity experiments in the United States, 1971-75 : prepared for Work in America Institute, inc., Scarsdale, New York , 1981 .

[13]  Pascale C. Sainfort,et al.  A balance theory of job design for stress reduction , 1989 .

[14]  Michael J. Smith,et al.  Effect of Physical Ergonomics on VDT Workers' Health: A Longitudinal Intervention Field Study in a Service Organization , 1999, Int. J. Hum. Comput. Interact..

[15]  Joellen Francis,et al.  Workspace influence on worker performance and satisfaction: an experimental field study , 1991 .

[16]  Robert N. Lehrer,et al.  White collar productivity , 1985 .

[17]  Bengt Knave,et al.  A longitudinal study of VDT work and health , 1992, Int. J. Hum. Comput. Interact..

[18]  L M Schleifer,et al.  Work Posture, Workstation Design, and Musculoskeletal Discomfort in a VDT Data Entry Task , 1991, Human factors.

[19]  Marvin J. Dainoff,et al.  Ergonomic improvements in VDT workstations: health and performance effects , 1991 .

[20]  J Verbeek.  The use of adjustable furniture: Evaluation of an instruction programme for office workers. , 1991, Applied ergonomics.

[21]  Pascale Carayon,et al.  Design of computer workstations , 2002 .

[22]  Richard A. Guzzo,et al.  The Effects of Psychologically Based Intervention Programs on Worker Productivity: A Meta-Analysis. , 1985 .

[23]  Michael J. Smith.  Mental and physical strain at VDT workstations , 1987 .

[24]  Michael J. Smith,et al.  Psychosocial Aspects of Computerized Office Work , 1997 .

[25]  M J Smith,et al.  Psychosocial aspects of working with video display terminals (VDTs) and employee physical and mental health. , 1997, Ergonomics.