To study the predictors of respiratory diseases in workers in high and low exposure areas in cement factories. METHODS: Cross sectional study was done including 86 workers recruited from main 4 departments: 32 technicians, 23 workers,17 supervisors , 10 engineers and 4 drivers. All subjects filled a structured questionnaire (including occupational history, allergic and respiratory symptoms, physical activity and job stress scores and nutritional habits) and anthropometric measurements, pulmonary function test results were recorded.