Related Experiment Video
Updated: Jan 6, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
The Physical Work Environment and Sleep: A Latent Class Analysis
Christopher Magee1, Vinod Gopaldasani, Shahnaz Bakand
1School of Psychology (Dr Magee); School of Health and Society (Dr Gopaldasani, Dr Bakand, Dr Coman), University of Wollongong, Australia.
Objective:
To investigate the relationships between the physical work environment and sleep using a person-centered approach.
Methods:
A total of 542 Australian employees aged 18 to 60 years completed a survey assessing exposure to physical work environment stressors (eg, noise, poor air quality, and hazardous manual tasks), sleep timing and sleep quality, and relevant covariates.
Results:
Latent class analysis (LCA) revealed three physical work environment classes: Infrequent exposure (51%); Occasional Exposure (31%); and Regular Exposure (18%). LCA also identified four sleep classes: Larks (24%); Typical sleep (43%); Insufficient sleep (20%); and Owls (13%). The Regular Exposure class was significantly associated with the Insufficient Sleep (odds ratio [OR] = 3.15, [1.29, 7.66]) and Owls (OR = 3.47 [1.24, 9.71]) classes.
Conclusions:
The person-centered approach provides important insights into how unique physical work environment experiences are linked with sleep.
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