Another factor that affected psychosomatic symptoms was work duration. It was found that work duration of more than 5 years being exposed to xylene had aOR of 0.2 (95% CI 0.02– 0.9). Those who worked more than 5 years and who were
exposed to toluene had aOR of 0.16 (95% CI 0.02–0.9). In addition, it was shown that work duration more than 5 years had an impact on mood symptom among those who were exposed to toluene with aOR at 0.1 (95% CI was 0.02–0.9).