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Objective: To estimate the prospective association between the exposure to three types of gender-based violence and harassment (GBVH) and psychotropic medication.

Methods: Information on three measures of workplace GBVH-sexual harassment (1) from superiors or colleagues, (2) from others (eg, clients) and (3) gender harassment from superiors or colleagues-were retrieved from the biannual Swedish Work Environment Survey 2007-2013 (N=23 449), a representative sample of working 16-64 years old registered in Sweden. The survey answers were merged with data on antidepressants, hypnotics/sedatives and anxiolytics from the Swedish Prescribed Drug Register. Cox proportional hazards analyses with days to purchase as time scale and first instance of medicine purchase as failure event were fitted, adjusted for demographic and workplace factors.

Results: Workers who reported exposure to gender harassment only (HR 1.2, 95% CI 1.07 to 1.36), to sexual but not gender harassment (HR 1.21, 95% CI 1.04 to 1.40), or to gender and sexual harassment (HR 1.31, 95% CI 1.08 to 1.60) had an excess risk of psychotropics use in comparison to workers who reported neither of the exposures in the past 12 months. We found no interaction between the exposures and gender in the association with psychotropics use.

Conclusions: Exposure to sexual or gender harassment at the workplace may contribute to the development of mental disorders.