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Elevated emissions of volatile organic compounds, including benzene, toluene, ethylbenzene, and o, p, and m-xylenes (BTEX), are an occupational health concern at oil transfer stations. This exploratory study investigated personal exposure to BTEX through environmental air and urine samples collected from 50 male workers at a major oil distribution company in Iran. Airborne BTEX exposures were evaluated over 8 h periods during work-shift by using personal passive samplers. Urinary BTEX levels were determined using solid-phase microextraction with gas chromatography mass spectrometry for separation and detection. Mean exposure to ambient concentrations of benzene differed by workers’ job type: tanker loading workers (5390 μg/m³), tank-gauging workers (830 μg/m³), drivers (81.9 μg/m³), firefighters (71.2 μg/m³) and office workers (19.8 μg/m³). Exposure across job type was similarly stratified across …