Journal
APPLIED ERGONOMICS
Volume 98, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2021.103596
Keywords
Air traffic control; Shift work organization; Traffic load
Categories
Funding
- French air navigation agency (Direction Generale de l'Aviation Civile, France)
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The company introduced a 'compressed' shift schedule to better fit with aircraft traffic load and then conducted a survey to assess its effects, with results showing the marginal impact of work organization on ATCOs. Traffic load affected sleep satisfaction and alertness.
A 'compressed' shift schedule (substitution of a rest day by a shift, shortening the duration of work breaks) was introduced for a better fit with aircraft traffic load. Thereafter, the company asked for a survey assessing the effects of the compressed shift system. Air traffic controllers (ATCOs) completed retrospectively a specific questionnaire assessing the effects of shift schedule (modified vs. initial) and of traffic load on fatigue, alertness (on-shift, upon awakening, during daily non-work activities), and sleep (duration, satisfaction). Work organization had marginal and unexpected effects, which might indicate ATCOs' disapproval of the intervention. Traffic load affected sleep satisfaction and alertness during work and non-work activities. Specific effects of shift included reduced sleep time prior to morning shifts compared to night shifts, whereas alertness and fatigue were rated at comparable levels for both shifts. Results suggest that shiftwork features which favor sleep loss across a work cycle have deleterious consequences on alertness and increase the need for recovery, which are further enhanced by traffic load.
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