Methods: Among 346 collected samples, benzene was identified in all cases (100%) and epichlorohydrin in 156 samples (45%). A significant difference was found in the mean of exposure to benzene and epichlorohydrin in various workshops (Pvalue <0.05). Occupational exposure to benzene in machiner with 1.68 ppm and patrol officers with 0.018 ppm were the highest and lowest values, respectively. There was no significant difference in the mean exposure to benzene in various occupations (Pvalue > 0.05).

<span nazanin'"="" 'b="" calibri="" 12pt="" roman","serif"="" new="" times="">Conclusion<span nazanin'"="" 'b="" calibri="" 12pt="" roman","serif"="" new="" times="">: It seems that work nature of employees in chemical industry affects their exposure to volatile organic compounds in workplace. According to the results, due to the proximity of compounds concentration to the action level, especially benzene and also the workers exposure to less than the maximum limit in the long-term, reducing exposure through appropriate control measures are necessary.