Paraffin is a petroleum-derived with high purity, causing occupational exposure among workers in the morphological science area. The aim of this study was to review the literature on occupational exposure to paraffin workers in this field. We conducted a literature review through the databases SciELO, LILACS, Bireme, Science direct and Google scholar, in which were selected classical and recent studies relevant to the subject discussion. It was found that papers on occupational exposure to paraffin are scarce, however this hydrocarbon cause nasal irritation,