Recognizing Symptoms of Exposure Toolbox Talk

Exposure symptoms can show up fast or build slowly during the shift. A worker may feel dizzy from fumes, start coughing from dust, get a headache from exhaust, or feel skin burning after contact with a chemical. These signs should never be brushed off as normal jobsite discomfort.

This talk focuses on how to recognize symptoms of exposure, what hazards may cause them, and when the crew needs to stop work, get fresh air, report the issue, and get medical help.

Why This Matters

• Early symptoms are often the first warning that dust, fumes, vapors, gases, chemicals, heat, or poor air quality are affecting workers.
• Ignoring symptoms can lead to serious illness, loss of consciousness, breathing problems, burns, or long-term health damage.
• Some exposures, like carbon monoxide or certain chemical vapors, may not have a strong smell or visible warning sign.
• One worker feeling sick may mean the whole area has an exposure problem.
• Quick action can prevent a minor symptom from becoming an emergency.

Common Hazards

• Headache, dizziness, nausea, confusion, or weakness from exhaust, carbon monoxide, solvents, fuel vapors, or poor ventilation.
• Coughing, wheezing, chest tightness, sore throat, or shortness of breath from dust, silica, smoke, welding fumes, or chemical mist.
• Burning eyes, watery eyes, blurred vision, or eye redness from vapors, dust, fumes, splashes, or overspray.
• Skin redness, itching, rash, swelling, burns, or numbness from cement, solvents, adhesives, cleaners, insulation, or contaminated PPE.
• Unusual fatigue, muscle cramps, heavy sweating, chills, or confusion from heat stress or dehydration.
• Bad taste in the mouth, metallic taste, throat irritation, or nosebleeds after working around chemicals, coatings, dust, or fumes.
• Symptoms that appear after leaving the work area, during lunch, or after the shift, which may still be tied to the exposure.
• A worker in a trench, pit, tank, crawl space, or enclosed room feeling sick while others outside the space feel normal.

Safety Checklist

Before Work Begins

• Review the work tasks that could create exposure to dust, fumes, vapors, gases, chemicals, heat, or contaminated materials.
• Check safety data sheets for products being used and know the symptoms listed for overexposure.
• Confirm required controls are in place, including ventilation, wet methods, barriers, air monitoring, or equipment exhaust controls.
• Make sure workers have the right PPE, including gloves, eye protection, protective clothing, and respirators when required.
• Know where eyewash, washing facilities, fresh air, first aid, and emergency contacts are located.
• Assign who to notify if symptoms appear and how the crew will communicate if the area becomes unsafe.

During Work

• Watch for coughing, dizziness, confusion, skin irritation, burning eyes, nausea, unusual fatigue, or trouble breathing.
• Report symptoms early, even if they seem mild or go away after stepping outside.
• Move affected workers to fresh air or away from the source when it is safe to do so.
• Do not send a sick worker back into the same area until the cause is identified and controlled.
• Check whether nearby workers are having similar symptoms.
• Stop using chemicals, engines, hot work, or dust-producing tools if symptoms point to an exposure problem.
• Do not remove contaminated clothing or PPE in a way that spreads dust or chemicals onto skin, vehicles, or clean areas.
• Get medical help right away for chest pain, severe breathing trouble, fainting, confusion, chemical burns, or eye exposure.

Crew Talking Points

• What exposure symptoms should we watch for during today’s work?
• Which tasks today could cause headaches, coughing, dizziness, skin irritation, or burning eyes?
• Where can workers go for fresh air if symptoms start?
• What controls are in place to prevent exposure before symptoms appear?
• Who needs to be notified if someone feels sick or notices a strong odor, dust cloud, or poor airflow?
• How will we keep one worker’s symptoms from turning into a crew-wide exposure?
• Ask questions now or speak up during the shift if you feel off, see someone struggling, or think the controls are not working.

Stop Work If

• A worker has trouble breathing, chest tightness, severe coughing, fainting, confusion, or loss of coordination.
• Multiple workers report headache, dizziness, nausea, burning eyes, throat irritation, or unusual fatigue.
• Symptoms appear in an enclosed space, trench, pit, shaft, basement, tank, or poorly ventilated room.
• There is a strong chemical smell, visible dust cloud, smoke, vapor, mist, or exhaust buildup.
• A worker has chemical contact with eyes or skin and washing or eyewash is needed.
• Air monitoring alarms, oxygen readings, carbon monoxide readings, or other exposure indicators show unsafe conditions.

Final Reminder

Symptoms are warning signs. Do not tough it out, hide it, or keep working through it. Speak up early, move away from the hazard, and fix the exposure before work continues.