OBJECTIVE: To analyze the variables associated with fatigue perception and workability on workers working 12-hour fixed night and day shifts. METHODS: A cross-sectional study was carried out. Forty-three workers, working 12-hour fixednight and day shifts in a textile factory, filled out questionnaires about fatigue, workability index, individual characteristics, life style and working conditions. A univariate linear regression analysis was performed. RESULTS: Fatigue-related factors are associated to the workers’ life style (physical activities is a protection factor), and sleep difficulties, with […]