Heat Stress on Job Sites: What Your Contractor Won't Tell You

There is no federal OSHA heat standard as of 2026. A proposed rule has been in process for years but has not been finalized. That means in most states, the contractor is not legally required to do anything specific when it is 110 degrees on a concrete slab and you are in full PPE. Some states have their own rules. Most do not. Your protection is your contract, your steward, and your own knowledge of what your body is telling you. Know the difference between heat exhaustion and heat stroke before you ever walk onto a hot job site. Heat exhaustion: heavy sweating, cold pale clammy skin, fast weak pulse, possible nausea. Get out of the heat, drink water, rest. Heat stroke: high body temperature, hot red skin that may be dry or damp, rapid strong pulse, confusion or loss of consciousness. This is a medical emergency. Call 911. Do not try to walk it off. People die from heat stroke on job sites every summer in this country and most of those deaths happen because someone tried to push through it. The contractor's heat plan, if they have one, will typically cover shade availability, water stations, and rest breaks. Read it on your first day. Know where the water is and know that you are supposed to be drinking before you are thirsty. By the time you feel thirst on a hot job site you are already behind. One full water bottle per hour in extreme heat is not an exaggeration. The contractual angle: many agreements include language about extreme heat provisions. Know your contract. Your steward should be able to tell you exactly what the contractor is obligated to provide. If they are not providing it, document the temperature and conditions and bring it to the steward. A grievance based on safety provisions is a legitimate grievance. The members who use those provisions are the ones who stay healthy enough to finish the job.