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. 2019 Apr 24;1(2):226-239.
doi: 10.3390/clockssleep1020020. eCollection 2019 Jun.

Burnout, Sleep, and Sleepiness during Day and Night Shifts in Transition from 8- to 12-Hour Shift Rosters among Airline Ground Crew Managers

Tamar Shochat  1 , Satanay Hadish-Shogan  1   2 , Michal Banin Yosipof  3 , Ayelet Recanati  3 , Orna Tzischinsky  4
Affiliations

Burnout, Sleep, and Sleepiness during Day and Night Shifts in Transition from 8- to 12-Hour Shift Rosters among Airline Ground Crew Managers

Tamar Shochat et al. Clocks Sleep. .

Abstract

Organizational changes in shift scheduling provide rare opportunities for field studies aimed at investigating the effects of such changes on health and wellbeing. We studied the effects of a transition from 8-hour (8-h) to 12-hour (12-h) shift rosters in 39 airline ground crew managers on burnout, sleep quality, and sleepiness. Assessments were collected during the 8-h and were repeated three months after the transition to 12-h shift rosters. These assessments included the Shirom-Melamed Burnout Measure (SMBM), the Pittsburgh Sleep Quality Index (PSQI), actigraphy, the Karolinska Sleepiness Scale (KSS) completed hourly during one day and two night shifts, and caffeine intake. Findings demonstrated lower burnout, improved sleep quality, improved quality of naps, and increased afternoon sleepiness during the 12-h day shift. Napping was reported during 12-h night shifts by 36% of the sample. In nappers, increased night shift sleepiness was associated with increased caffeine intake on 8- and 12-h shifts. In non-nappers, increased night shift sleepiness was associated with decreased caffeine intake on the 8-h shift only. Change in shift length affects other structural and behavioral parameters in the workplace, making it challenging to isolate distinct characteristics of the two rosters and their relative effects on study outcomes. Individual differences in adaptation to shiftwork may also play a role.

Keywords: burnout; caffeine; napping; shift length; shiftwork; sleep quality; sleepiness.

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Conflict of interest statement

Conflicts of InterestThe authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

Figures

Figure 1
Figure 1
Changes in individual participants’ total PSQI scores from 8- to 12-h shift rosters. Continuous line: increased; dotted line: decreased; and dashed line: unchanged PSQI total score.
Figure 2
Figure 2
(A). Day shift sleepiness (Karolinska Sleepiness Scale; KSS) during the 8- versus the 12-h shift rosters. (B). Night shift sleepiness (KSS) during the 8- versus the 12-h shift rosters.
Figure 2
Figure 2
(A). Day shift sleepiness (Karolinska Sleepiness Scale; KSS) during the 8- versus the 12-h shift rosters. (B). Night shift sleepiness (KSS) during the 8- versus the 12-h shift rosters.
Figure 3
Figure 3
Associations between cups of caffeine and sleepiness in nappers versus non-nappers during 8-h versus 12-h night shifts at 01:00, 03:00, and 05:00.
See this image and copyright information in PMC

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