Subjective and objective survey of office lighting: effects on alertness, comfort, satisfaction, and safety

Main Article Content

Zeinab Rasouli Kahaki
Hamid Jahangiri
Andrew P Smith
Reza Kazemi

Keywords

lighting, awareness, visual comfort, satisfaction, natural light, color temperature, environmental ergonomics

Abstract

Background: Lighting is one of the workplace factors that can relevantly impact workers’ health, performance, safety, and job satisfaction. Brightness, natural light and color temperature are the factors that affect the quality of lighting. This study involved subjective and objective evaluation of office lighting and its effects on workers’ alertness, comfort, satisfaction, safety, and performance in a prominent government office. Methods: Visual comfort, alertness, performance, safety and satisfaction were assessed subjectively using the questionnaires and rating scales. Moreover, illuminance, color temperature of light sources, and natural light availability were evaluated objectively. Results: The findings of this study indicated that the use of natural light in the workplace could increase the illuminance and color temperature of light in the workplace and improve alertness, visual comfort, satisfaction and worker’s preference. Conclusions: To improve the quality of lighting in the workplace, factors affecting it, such as the color temperature and the availability of natural light, should be considered.

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References

1. Carrer P, Wolkoff P. Assessment of indoor air quality problems in office-like environments: Role of occupational health services. Int J Environ Res Public Health. 2018;15(4):741. Doi: https://doi.org/10.3390/ijerph15040741
2. Zhu Y, Yang M, Yao Y, et al. Effects of illuminance and correlated color temperature on daytime cognitive performance, subjective mood, and alertness in healthy adults. Environ Behav. 2019;51(2):199-230. Doi: https://doi.org/10.1177/0013916517738077
3. Kazemi R, Choobineh A, Taheri S, Rastipishe P. Comparing task performance, visual comfort and alertness under different lighting sources: An experimental study. EXCLI J. 2018;17:1018. Doi: https://doi.org /10.17179/excli2018-1676
4. Piccoli B. A critical appraisal of current knowledge and future directions of ergophthalmology: consensus document of the ICOH Committee on 'Work and Vision'. Ergonomics. 2003;46(4):348-406. Doi: https://doi.org/10.1080/0014013031000067473
5. Kozaki T, Miura N, Takahashi M, Yasukouchi A. Effect of reduced illumination on insomnia in office workers. J Occup Health. 2012:12-0049-FS. Doi: https://doi.org/10.1539/joh.12-0049-FS
6. Viola AU, James LM, Schlangen LJM, Dijk D-J. Blue-enriched white light in the workplace improves self-reported alertness, performance and sleep quality. Scand J Work Environ Health. 2008:297-306. Doi: https://www.jstor.org/stable/40967721
7. Schellewald V, Kleinert J, Ellegast R. Effects of two types of dynamic office workstations (DOWs) used at two intensities on cognitive performance and office work in tasks with various complexity. Ergonomics. 2021;64(6):806-18. Doi: https://doi.org/10.1080/00140139.2020.1862308
8. Mills PR, Tomkins SC, Schlangen LJ. The effect of high correlated colour temperature office lighting on employee wellbeing and work performance. J Circadian Rhythms. 2007;5(1):1-9. Doi: https://doi.org/10.1186/1740-3391-5-2
9. EN B. Light and lighting. Basic terms and criteria for specifying lighting requirements. UK: British Standards Institution; 2011.
10. Carlucci S, Causone F, De Rosa F, Pagliano L. A review of indices for assessing visual comfort with a view to their use in optimization processes to support building integrated design. Renew Sustain Energy Re. 2015;47:1016-33. Doi: https://doi.org/10.1016/j.rser.2015.03.062
11. Hamidi NNE, Mansor FA, Hashim MZ, Muhammad N, Azib WN. The Relationship between Physical Workplace Environment and Employees' Performance. JCSSR. 2020;4(1):56-67.
12. Faria JRGd, Inskava AY, Planitzer ST. Lighting preferences in individual offices. Ambiente construído. 2017;17:39-53. Doi: https://doi.org/10.1590/s1678-86212017000100122
13. Galasiu AD, Veitch JA. Occupant preferences and satisfaction with the luminous environment and control systems in daylit offices: a literature review. Energy Build. 2006;38(7):728-42. Doi: https://doi.org/10.1016/j.enbuild.2006.03.001
14. Linhart F, Scartezzini J-L. Evening office lighting–visual comfort vs. energy efficiency vs. performance? Build Environ. 2011;46(5):981-9. Doi: https://doi.org/10.1016/j.buildenv.2010.10.002
15. Simonson E, Brozek J. Effects of illumination level on visual performance and fatigue. JOSA. 1948;38(4):384-97. Doi: https://doi.org/10.1364/JOSA.38.000384
16. Rea MS. The IESNA lighting handbook: reference & application. 2000.
17. Dehghan H, Mohebian Z, Yadegarfar G. Evaluation of Effects of Different Levels of Brightness on Attention and Reaction Time under Laboratory Conditions. Iran J Ergon. 2017 Mar 10;4(4):48-56.
18. Durak A, Olguntürk NC, Yener C, Güvenç D, Gürçınar Y. Impact of lighting arrangements and illuminances on different impressions of a room. Build Environ. 2007;42(10):3476-82. Doi: https://doi.org/10.1016/j.buildenv.2006.10.048
19. Kralikova R, Wessely E. Lighting quality, productivity and human health. Proceedings of the 27th DAAAM International Symposium, 2016;59-65. DOI: 10.2507/27th.daaam.proceedings.009
20. Vimalanathan K, Babu TR. The effect of indoor office environment on the work performance, health and well-being of office workers. J Environ Health Sci Engineer. 2014;12(1):1-8. Doi: https://doi.org/10.1186/s40201-014-0113-7
21. Motamedzadeh M, Golmohammadi R, Kazemi R, Heidarimoghadam R. The effect of blue-enriched white light on cognitive performances and sleepiness of night-shift workers: a field study. Physiol Behav. 2017;177:208-14. Doi: https://doi.org/10.1016/j.physbeh.2017.05.008
22. Lan L, Hadji S, Xia L, Lian Z. The effects of light illuminance and correlated color temperature on mood and creativity. Build Simul. 2021;14:463-475. Doi: https://doi.org/10.1007/s12273-020-0652-z
23. Zhao Z-C, Zhou Y, Tan G, Li J. Research progress about the effect and prevention of blue light on eyes. Int J Ophthalmo. 2018;11(12):1999. Doi: 10.18240/ijo.2018.12.20
24. Dianat I, Sedghi A, Bagherzade J, Jafarabadi MA, Stedmon A. Objective and subjective assessments of lighting in a hospital setting: implications for health, safety and performance. Ergonomics. 2013;56(10):1535-45. Doi: https://doi.org/10.1080/00140139.2013.820845
25. Shamsul B, Sia C, Ng Y, Karmegan K. Effects of light’s colour temperatures on visual comfort level, task performances, and alertness among students. Am J Public Health. 2013;1(7):159-65. Doi: 10.12691/ajphr-1-7-3
26. Åkerstedt T, Gillberg M. Subjective and objective sleepiness in the active individual. Int J Neurosci. 1990;52(1-2):29-37. Doi: https://doi.org/10.3109/00207459008994241
27. Shahid A, Wilkinson K, Marcu S, Shapiro CM. Karolinska sleepiness scale (KSS). STOP, THAT and One Hundred Other Sleep Scales: Springer; 2011. p. 209-10. DOI: 10.1007/978-1-4419-9893-4_4
28. America IESON. Lighting handbook: Reference & application: Illuminating Engineering Society of North America; 2000.
29. Katabaro JM, Yan Y. Effects of lighting quality on working efficiency of workers in office building in Tanzania. J Environ Public Health. 2019;2019. Doi: https://doi.org/10.1155/2019/3476490
30. Wang Q, Xu H, Zhang F, Wang Z. Influence of color temperature on comfort and preference for LED indoor lighting. Optik. 2017;129:21-9. Doi: https://doi.org/10.1016/j.ijleo.2016.10.049
31. Roche L, Dewey E, Littlefair P. Occupant reactions to daylight in offices. Light Res Technol. 2000;32(3):119-26. Doi: https://doi.org/10.1177/096032710003200303
32. Boyce P, Hunter C, Howlett O. The benefits of daylight through windows. New York Rensselaer Polytechnic Institute 2003.
33. Jamrozik A, Clements N, Hasan SS, et al. Access to daylight and view in an office improves cognitive performance and satisfaction and reduces eyestrain: A controlled crossover study. Build Environ. 2019;165:106379. Doi: https://doi.org/10.1016/j.buildenv.2019.106379
34. Nicol F, Wilson M, Chiancarella C. Using field measurements of desktop illuminance in European offices to investigate its dependence on outdoor conditions and its effect on occupant satisfaction, and the use of lights and blinds. Energy Build. 2006;38(7):802-13. Doi: https://doi.org/10.1016/j.enbuild.2006.03.014
35. Duijnhoven J, Aarts M, Aries M, Rosemann A, Kort H. Systematic review on the interaction between office light conditions and occupational health: Elucidating gaps and methodological issues. Indoor Built Environ. 2019;28(2):152-74. Doi: https://doi.org/10.1177/1420326X17735162