The investigation of work-related musculoskeletal disorders among female workers in a hazelnut factory: Prevalence, working posture, work-related and psychosocial factors

•The high prevalence of WMSD was present among female workers in the hazelnut.•The most commonly reported complaint was in the lower back, neck, shoulder and upper back.•The cervical and thoracal posture during hazelnut selection was risky based on the results of the photogrammetric analysis.•To decrease the pain severity, the working posture and environmental factors might be amendable.