Thermal stress is a significant health hazard and is an important topic in Industrial Hygiene. In order to ensure that workers are not exposed to excessive heat or cold stress, thermal stress monitoring should be used to determine the level of thermal stress so the adequate thermal stress reduction controls can be implemented.

CEM conducts thermal stress monitoring by recording dry and wet bulb readings, tasks, and workplace conditions throughout a worker's shift. This data is then analyzed and presented in a comprehensive heat stress report showing levels of thermal stress throughout the shift, levels of liquid intake and how they correspond with thermal stress levels, and activities that cause excessive thermal stress. CEM then makes recommendations based on this data for implementing controls to reduce thermal stress.