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Journal of Environmental and Public Health
Volume 2013, Article ID 527078, 5 pages
Research Article

Relationship between Lighting and Noise Levels and Productivity of the Occupants in Automotive Assembly Industry

Department of Occupational Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran

Received 28 February 2013; Revised 7 September 2013; Accepted 9 September 2013

Academic Editor: Mohammad Mehdi Amin

Copyright © 2013 Jafar Akbari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Work environment affects human productivity and his performance. The aims of this study were to investigate the effects of lighting and noise levels on human productivity in the automotive assembly industry. Method. Subjects were 181 workers from different parts of an automobile assembly industry. Illuminance (Lx) at the height of 30 inches from the surface of work station and noise (dBA) were locally measured. Also human productivity by the Goldsmith and Hersey scale (1980) was measured. Data were analyzed by using SPSS v20 Pearson correlation coefficient. Results. The results showed that the relationship between noise level and human productivity is negative and significant ( , ), but there was no significant relationship between lighting and human productivity ( ). Conclusion. Based on the results, in assembly tasks, noise has a negative impact on human productivity, and lighting does not affect this. So, in order to increase employee productivity, noise control and reduction to less than the standard values (less than 85 dB) is necessary.