Neurocognitive impairment in night and shift workers: a meta-analysis of observational studies

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Summary

This meta-analysis of observational studies is the first to quantitatively confirm that shift and night workers experience significant neurocognitive impairments across five domains: processing speed, working memory, psychomotor vigilance, cognitive control, and visual attention. These findings underscore the importance of circadian-supportive lighting interventions in workplaces with shift schedules to mitigate cognitive decline and reduce error risk.

Key Findings

Shift work was significantly associated with decreased cognitive performance across five domains: processing speed, working memory, psychomotor vigilance, cognitive control, and visual attention.
This is the first meta-analysis to provide pooled quantitative evidence linking shift/night work to broad neurocognitive impairment in observational studies.
Impairments were observed consistently across multiple study designs, suggesting a robust and generalizable effect of shift work on cognition.

Categories

Shift Work & Staff Wellbeing: Meta-analysis directly linking shift work and night work to measurable neurocognitive deficits across multiple cognitive domains.

Workplace Performance: Findings on processing speed, working memory, and vigilance have direct implications for productivity and error risk in shift-based work environments.