Summer Heat Safety

Workplace injuries and fatalities most frequently peak during the summer months, with July and August often cited as the most dangerous months. Injury rates are high throughout June, July, and August due to increased construction activity, high heat exposure, and inexperienced seasonal workers. Summertime workplace injuries spike during June, July, and August, with approximately 28,000 injuries annually linked specifically to excessive heat exposure. Injury risk rises significantly at 85°F, and at 100°F–105°F, the risk of injury increases by 10%–15% compared to 80°F, often affecting industries like construction, manufacturing, and transportation.

• Fatal Injuries: August is frequently identified as the deadliest month for occupational fatalities, closely followed by July.
• Factors: Increased risks in summer include heat stress (causing sweaty palms/foggy safety glasses), increased vehicle traffic, and higher work volumes.
• Lower Rates: Workplace injury reports tend to decline significantly in the winter, reaching low points in November and December.

Summer workplace injuries—mainly heat exhaustion, dehydration, sunburn, and fatigue—are best prevented by staying hydrated, taking scheduled breaks in shaded or air-conditioned areas, and acclimating to high temperatures. Key precautions include wearing loose-fitting, light-colored clothing, utilizing cooling gear, and monitoring colleagues for signs of heat illness, especially during peak hours of 11 a.m. to 4 p.m.

Key Summer Workplace Hazards

• Heat Illnesses: Heat stroke and heat exhaustion caused by high temperatures and humidity.
• Dehydration: Insufficient water intake causing fatigue and impaired judgment.
• Sun Exposure: UV radiation leading to severe sunburns, fatigue, and potential long-term skin damage.
• Fatigue/Exhaustion: Increased strain on the body, especially for outdoor workers or those in non-air-conditioned spaces.
• Insect/Wildlife Bites: Increased activity of mosquitoes, ticks, and bees posing risks.

How to Prevent Summer Workplace Injuries

• Hydration Strategy: Drink fluids frequently, aiming for at least one pint (approx. 16 oz)
• Workplace Scheduling: Reschedule the heaviest tasks to earlier in the morning or later in the afternoon to avoid the hottest parts of the day.
• Acclimatization Plans: Allow new or returning workers to gradually increase their workload and exposure to heat over 7-14 days, as suggested by CDC/NIOSH guidelines.
• Shaded/Cool Rest Breaks: Ensure accessible, cool, or shaded areas for mandatory breaks, particularly for outdoor workers.
• Proper Attire & Protection: Wear loose, light-colored, breathable clothing. Utilize sunscreen, hats, and sunglasses. Consider cooling gear like neck towels or vests.
• Education and Awareness: Train employees to recognize signs of heat stroke (confusion, dizziness, hot/dry skin) and heat exhaustion (heavy sweating, weak pulse).Use the 20-20-20 Rule: Every 20 minutes, take 20 seconds to look 20 feet around you to assess for, and manage, new hazards in your immediate work area.