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Hearing threshold was  assessed  in  subjects engaged in  different occupations  at 250 Hz, 500  Hz,  1000  Hz,  2000 Hz, 4000 Hz  and 8000  Hz,  for  left  and  right ear.  The  results revealed  that the  hearing threshold  of truck  drivers,  auto  drivers, traffic policeman, shop keepers,  military personals,  post office  personals are  significantly higher  than  the  corresponding value for the normal subjects (persons not engaged in any  particular  profession).  Among  the  different  occupational categories, the truck drivers were found to have maximum hearing loss at higher frequencies which was followed by traffic  police,  army  personals,  auto  drivers,  shopkeepers  and  tailors.