Protect worker health and ensure regulatory compliance with expert heat stress monitoring as per OSHA Technical Manual, 2017 – Chapter 4. 

At METS Lab, we provide comprehensive Heat Stress Monitoring services to help employers identify and manage thermal hazards in the workplace. Using guidelines from the OSHA Technical Manual (OTM), 2017 – Chapter 4, our assessments are designed to evaluate environmental conditions and prevent heat-related illnesses and productivity loss. 

Why Heat Stress Monitoring Matters?

Heat stress occurs when the body cannot maintain a healthy temperature due to excessive heat exposure, especially in high-temperature work environments such as foundries, boiler rooms, construction sites, and outdoor facilities. If not properly managed, heat stress can lead to:

• Heat exhaustion 
• Heat stroke (potentially fatal) 
• Reduced cognitive and physical performance 
• Increased risk of workplace accidents 
• Regulatory non-compliance

The OSHA Technical Manual, Chapter 4 (2017) provides detailed procedures for evaluating thermal stress in occupational settings. It recommends methods for monitoring environmental factors such as dry bulb temperature, wet bulb globe temperature (WBGT), relative humidity, air velocity, and radiant heat. It also outlines physiological monitoring and workload classifications to assess risk levels accurately. 

METS Lab uses this OSHA standard as the basis for all our heat stress assessments to help you:

• Identify risk areas 
• Quantify heat exposure 
• Implement control measures 
• Stay compliant with safety standards