Oak processionary Oak processionary The oak processionary "(Thaumetopoea processionea)" is a moth whose caterpillars can be found in oak forests. They are a human irritant because of their venomous setae (hairs), which can cause skin irritation and asthma. The moths are widely distributed in central and southern Europe, and are occasionally found as far north as Sweden. In the southern countries of Europe the populations are controlled by natural predators, but these predators do not exist in northern Europe. Their range is expanding northward, possibly or partly as a result of global warming. The moth now has an established population in the
Health Hazard Evaluation Program employees are sick and the cause is unknown or the number of illnesses or injuries is higher than expected in a group of employees. Requests should also be made when employees are exposed to a new hazard or a hazard unregulated by OSHA or when employees are experiencing ill health when their exposure to an agent is below the occupational exposure limits. If multiple hazardous agents or conditions are present in the workplace, an HHE request can be beneficial. Common hazards evaluated include chemicals, particulates, noise, radiation, biological agents, ergonomics, heat stress, and occupational stress. An HHE can be requested