Normally, risk, a hazardous situation with potential to cause damage and loss to people and facilities, is considered under a pure technical point of view. We intend to investigate the risk under a psychosocial perspective, anchored on the social representation of a group dealing with the risk. We present two studies: an oil company and a chemical company, producer of explosives. Data were collected through a set of semi-structured interviews: 16 individuals were interviewed for the oil company, and 15 individuals for the chemical company. An automatic content analysis was performed using the software ALCESTE©. Results show that risk concept is related to control and reliance on abstract systems and at the same time is focused on human reliability. There is a marked cleavage between representational contents related to a mechanical perspective of risk management and contents related to potentially dangerous activities, specific to the studied groups