The Effect of the Circadian Lighting on the Productivity Level: An Experiment in a Co-Working Space

Exposure to natural features, such as natural light, directly correlates with high rates of the individual's productivity level. An artificial lighting technique that mimics natural light in its aspects like intensity and dynamic color ranges is called Circadian Lighting, which significantly impacts the individual's productivity level. This paper aims to examine the effect of Circadian Light on the productivity level of the users of a co-working space. It is hypothesized that using Circadian Light in a working environment will enhance the circadian rhythm of individuals by improving their sleeping and waking cycles, and this enhancement will directly correlate with a high level of productivity for individuals in such an indoor working environment. This research experiment is hosted in a co-working space, which is considered a semi-stressful working environment. The research type is experimental design research. By applying a self-reported questionnaire about productivity changes, the methodology is formed to conduct answers about the effect of the Circadian Light on the changes in circadian patterns, especially the sleeping and waking cycles, and its relationship with productivity levels. The overall sample size is thirty-three participants. The reversal design technique 'ABAB' was applied to ensure productivity and circadian rhythm enhancements from the questionnaire answers. The results show statistical data using Excel charts and graphs and outputs using SPSS. The results indicate an improvement in the productivity of the individuals, good sleeping qualities, and alertness in the early morning; all aspects of changes can be mentioned due to the changes in the melatonin levels. The paper's conclusion supports and approves the hypothesis. This paper also concludes the importance of dynamic lighting techniques in interior architectural design. The significance of this paper is in filling the gap in the research of adding Circadian Lighting to a semi-stressful working environment such as co-working spaces.