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Environment2
Work Type3
Heat Index4
Risk Factors5
Controls6
Symptoms7
Analysis8
Results🔥 OSHA 3154 Heat Stress Assessment
Free Heat Stress
Workplace Assessment
Workplace Assessment
Identify heat stress risks in your workplace in under 3 minutes. Based on OSHA 3154 guidelines. Includes a live Heat Index calculator, personalised risk score, and downloadable PDF report.
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OSHA 3154 Heat Stress guidelines🌡️
Live Heat Index calculator included🖶
Free downloadable PDF report✅
No sign-up, no credit card, no limit☁️
Step 1 of 6
What is your primary work environment?
Select the setting that best describes where workers are exposed to heat. This determines baseline environmental risk per OSHA 3154.
☀️Outdoor Direct Sun
🌳Outdoor Shade
🏭Indoor Hot (Furnace / Kitchen)
💧Indoor Humid
🚗Vehicle / Cab
❄️Indoor Air-Conditioned
Step 2 of 6
What type of physical work is performed?
Select all work types performed regularly. Physical exertion is a primary heat stress driver per OSHA 3154 because metabolic heat generation adds directly to heat load.
🏋Heavy Lifting
🔨Manual Labour
🚶Constant Walking
🧍Prolonged Standing
🚗Operating Equipment
🪑Light / Sedentary
Step 3 of 6
Live Heat Index Calculator
The Heat Index combines air temperature and relative humidity to show what it actually feels like to workers. OSHA uses Heat Index to classify risk level. Adjust the sliders for your worksite conditions.
🌡️ Worksite Heat Index Calculator
Based on NOAA Heat Index formula used by OSHA 3154
95°F
50%
—
Adjust sliders above
Set temperature and humidity to see your heat index.
Step 4 of 6
Workplace heat risk factors
Answer Yes or No for each condition. These are the primary heat stress risk factors identified in OSHA 3154.
Are any workers new, returning after absence, or not yet acclimatised to heat?
OSHA 3154: lack of acclimatisation is the leading cause of heat fatalities in the first days of work
Do workers wear heavy PPE, impermeable suits, or multiple clothing layers?
Impermeable clothing prevents sweat evaporation, significantly increasing core body temperature
Is free cool drinking water available at all times (at least 1 cup every 20 minutes)?
OSHA recommends water, rest, and shade. Dehydration accelerates heat illness onset
Is shaded or cooled rest area available within close reach of all workers?
Access to shade or cool rest areas is a core OSHA 3154 engineering control requirement
Have there been any heat illness cases or near-misses at this site in the past year?
Past heat illness incidents are the strongest single predictor of future risk at a worksite
Is there a written Heat Illness Prevention Plan with assigned first aid responsibilities?
OSHA requires a written plan covering water, rest, shade, acclimatisation, and emergency response
Have supervisors and workers been trained to recognise and respond to heat illness?
OSHA 3154 requires training on symptoms, emergency response, and the buddy system
Step 5 of 6
Which heat controls are currently in place?
Select all controls already implemented at your worksite. These are the engineering and administrative controls recommended by OSHA 3154.
⏱Work-Rest Schedule
👪Buddy System
💨Fans or Ventilation
👔Cooling Vests / PPE
🌞Cool-Hour Scheduling
🗼Heat Index Monitoring
📅Acclimatisation Program
🩺On-Site First Aid
Step 6 of 6
Have workers reported any heat illness symptoms?
Select all symptoms that have been observed or reported at your worksite. Symptoms reported indicate active heat stress, not just risk. OSHA 3154 treats reported symptoms as an immediate trigger for action.
💧 Muscle Cramps
💧 Heavy Sweating
😓 Weakness or Fatigue
🮉 Headache
🤢 Nausea or Vomiting
😵 Dizziness or Fainting
🤯 Confusion or Slurred Speech
🔥 Hot Dry Skin (No Sweating)
❤️ Rapid or Weak Pulse
🚨 Loss of Consciousness
0%
Analyzing Your Heat Stress Risk…
Evaluating your worksite conditions against OSHA 3154 heat stress criteria.
Calculating Heat Index exposure level…
Assessing environmental and personal risk factors…
Evaluating controls and program gaps…
Generating personalised recommendations…