Noise at school: any implications for teachers’ health? Findings from the French CONSTANCES study

BACKGROUND: While noise at school is a well-known issue concerning students’ well-being, data on its potential effect on teachers’ health are limited. METHODS: Among teachers (n = 13,843) and a sample of non-education employees (n = 34,338) participating in the French CONSTANCES cohort (enrollment phase 2012-2020), we evaluated self-reported noise exposure at inclusion with the question “do you work in an environment where you sometimes have to raise your voice to talk to people 2 or 3 meters away?”(yes/no). First, we compared proportions of teachers who reported noise exposure to different groups of non-education employees. Second, among teachers, we cross-sectionally assessed, using logistic regressions adjusted for potential confounders, how combined exposure to occupational noise and work-related stress (defined alternately as effort-reward imbalance or tension with the public) was associated with two health indicators: self-perceived health (poor vs. good) and depressive symptoms (Centre of Epidemiologic Studies Depression scale, sex-specific cut-points, high vs. low to moderate), respectively. RESULTS: Thirty-two percent of teachers declared working in a noisy environment compared to 14% among non-education employees included. Primary school teachers were particularly exposed (42.6%), in comparable proportions to manual workers (43.3%). Among teachers, noise alone was not significantly related to self-perceived health but slightly associated with higher odds of depressive symptoms. We further observed evidence of an interaction effect on depressive symptoms between noise and tension with the public. CONCLUSIONS: This large study highlights that noise is a common occupational exposure among teachers in France. As it may interact with sense of physical insecurity to weight particularly on mental health, our results advocate for a better considering of such every day and long-term exposure on teachers’ health. KEY MESSAGES: • Noise is a common occupational exposure for French teachers. • As it may interact with work-related stress to affect mental health, noise at school should not be overlooked as an occupational hazard.