Drilling industry provides a significant potential for occupational health risks. Thus, health-related hazards (chemical, physical, ergonomic and biological) must be recognized, evaluated and controlled in order to prevent occupational illnesses which come from exposure to them. For these, a good occupational health risk assessment needs to be applied. Risk assessment monitors risks and provides guidance for decision-making. This project identifies all the occupational health risks and estimated risk levels. At last, the risk numbers are assessed their significance by the use of occupational health risk assessment techniques to minimize the risks. The main goal is to gain a level of risk protection which is acceptable with a good model. Therefore, the Occupational health risk assessment worksheet illustrates health hazards into four categories of every tasks of drilling industry. The risk categorized in the five levels and the high risks of Iranian drilling industry are those in the category of c.
