Heat Stress

Involves the physical removal of the hazard.
For example, move equipment being worked on away from heat sources.

Similar to elimination, involves removing something hazardous, and replacing it with something non-hazardous.
For example, old inefficient equipment that generates heat can be replaced with newer equipment that has a lower operating temperature.

Keep workers isolated from a hazard.
For example, providing a shaded shelter to work or take breaks under isolates workers from the harsh effects of the sun.

Used to change work behaviours.
For example, posting instructions and signs warning employees to drink fluids throughout the day, take breaks, and avoid direct sunlight during the hottest hours of the day.

Personal Protective Equipment (PPE) should be used as a solution when none of the above can be implemented, or in conjunction with another type of solution (Elimination, Substitution, Engineering, or Administrative Controls).