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Journal of Occupational & Environmental Medicine:
doi: 10.1097/JOM.0b013e3181d8db23
Original Articles

Impact of Nighttime Awakenings on Worker Productivity and Performance.

Zammit, Gary K. PhD; Joish, Vijay N. PhD; Kong, Meg C. MS; Balkrishnan, Rajesh PhD; Lerner, Debra PhD; Rosekind, Mark PhD

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Objective: To describe the relationship between nighttime awakenings and work performance.

Methods: Employees (N = 4188) at four US companies described their sleep patterns and completed the Work Limitations Questionnaire. Participants were categorized by number of nighttime awakenings: 0 (n = 464; 11%), 1 to 2 (n = 2373; 58%), 3 to 4 (n = 984; 24%), or ≥5 (n = 289; 7%). Work Limitations Questionnaire performance and productivity measures were compared among the groups using a one-way analysis of variance model.

Results: Thirty-one percent of the sample averaged ≥3 nighttime awakenings. Compared with respondents with fewer nighttime awakenings, these respondents had the greatest work performance and productivity impairments across a wide range of dimensions.

Conclusions: Workers who experienced ≥3 nighttime awakenings have poorer work productivity and performance than do workers who experience fewer awakenings.

©2010The American College of Occupational and Environmental Medicine


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