Occupational exposure refers to the potential contact and risk of harm posed to workers by hazards present in their work environment. These hazards can include chemical substances, biological agents, physical factors (such as noise or vibration), and ergonomic factors (such as repetitive movements or awkward postures). Monitoring and reducing occupational exposure is important to protect workers' health and safety and prevent work-related illnesses or injuries. Researchers in this field study the sources and levels of exposure, the health effects associated with exposure, and strategies to minimize or eliminate exposure risks in various occupational settings.