The UAE Ministry of Human Resources and Emiratisation (MOHRE) enforces a strict midday work ban from 12:30pm to 3:00pm for all outdoor workers from June 15 to September 15 each year. Violations result in fines of AED 5,000 to AED 50,000 per worker.
Our UAE Heat Index Safe Working Calculator helps site managers assess heat stress risk, determine safe working status, and calculate minimum water requirements for workers at any temperature and humidity combination.
How to Use This Calculator
- Enter current air temperature in degrees Celsius
- Enter relative humidity percentage
- Select work type — indoor, outdoor in shade, or outdoor in direct sun
- Select time of day
- Click Calculate for heat index temperature, work status, risk level, and minimum water per worker
🇦🇪 UAE Tip: UAE employers must provide drinking water at a rate of at least 1 litre per worker per hour during high heat conditions. Mandatory rest areas with shade and cooling are required on all UAE construction sites. Keep heat safety training records for all outdoor workers. Report MOHRE heat regulation violations on the toll-free number 800-60.
The Formula Explained
Heat Index = Temperature plus (0.33 x vapour pressure) minus 4. Direct sun exposure adds approximately 8°C. Risk levels: above 32°C moderate, above 39°C high, above 46°C very high, above 54°C extreme stop work.
Frequently Asked Questions
What is the UAE outdoor work ban rule?
MOHRE bans all outdoor work from 12:30pm to 3:00pm from June 15 to September 15. This applies to all outdoor workers including construction, agriculture, and landscaping. Employers face fines for violations.
What heat stress symptoms to watch for on UAE sites?
Warning signs: heavy sweating, weakness, cold pale skin, fast weak pulse, nausea. Severe heat stroke: no sweating, hot red skin, fast strong pulse, unconsciousness. Heat stroke is life-threatening — call 998 immediately.
What water provision is required for UAE outdoor workers?
UAE law requires employers to provide clean, cool drinking water and shade areas at all outdoor worksites. During the summer ban period, workers must not be required to work in direct sunlight between 12:30pm and 3:00pm.
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