As the summer season begins in South Carolina, workers will often face the challenges of blistering heat and severe weather. When inclement weather, high temperatures, humidity and physical labor intersect, they create an elevated risk of heat-related illness and injuries. Addressing this challenge with a little planning can help prevent injuries, maintain productivity and save lives.
Some signs of heat-related illnesses are subtle, while others are quite apparent. These illnesses occur when the body cannot effectively cool itself. Most commonly, the illnesses include heat cramps, heat exhaustion and heat stroke. Heat cramps are painful muscle spasms caused by the significant loss of salt and fluids through perspiration. Heat exhaustion, a more serious issue, involves headaches, dizziness, nausea, heavy sweating and weakness. The most severe form of heat-related illness, heat stroke, is a medical emergency with symptoms of confusion, loss of consciousness and dangerously high body temperatures. Without immediate treatment, heat stroke can be fatal.
Hydration is the first line of defense against heat related illnesses. Workers should hydrate liberally throughout the day, even if they do not feel thirsty. A common practice is to drink about 1 cup of water every 15 to 20 minutes in strenuous work and hot conditions. Avoiding alcohol and excessive caffeine is also important, as both can contribute to dehydration.
Proper clothing and personal protective equipment also play a big part in staying safe. Lightweight, light-colored and loose-fitting clothing allows for better air circulation and helps to regulate body temperature while ensuring safety visibility. Wide-brimmed hats can also reduce sun exposure, while sunscreen with a high sun protection factor, or SPF, protects against harmful ultraviolet rays. Sunburn not only damages the skin but also impedes the body’s ability to cool itself.
Work scheduling and task planning are also critical factors in planning for heat safety. If possible, the most physically demanding tasks should be scheduled during cooler parts of the day, such as in the early morning or late afternoon, keeping in mind the issues of having less sunlight available. Leaders should incorporate work-rest cycles, allowing workers to regularly break in shaded or air-conditioned areas. This practice is very helpful in lowering core body temperatures and averting fatigue.
Acclimatization is a critical consideration as well. Workers new to the job or perhaps returning after some time away will very likely need time to readjust to the environment, especially in acclimatizing to the heat. Increasing workloads and weather exposure in graduated increments will help workers adjust, reducing the risk of heat illness. Monitoring employees closely during this period is critical, and leaders should make this a top priority in supporting a culture of safety.
Access to hydration, shade and cooling stations is a basic responsibility of leaders. Clear policies on heat safety, along with enforcement and supervision, can help ensure that guidelines are followed. Encouraging open communication allows workers to report symptoms or unsafe conditions without fear of repercussions.
Training and awareness are also key in preventing, identifying and addressing heat-related illnesses. Employees should be educated on the signs and symptoms of heat-related illnesses and encouraged to look out for each other. Buddy systems are often effective, ensuring employees regularly check in and recognize early warning signs in their coworkers. Quick response to an issue can prevent life-threatening emergencies.
The U.S. Department of Labor’s Occupational Safety and Health Administration released an updated National Emphasis Program on Outdoor and Indoor Heat-Related Hazards, effective April 10, 2026.
Summer also brings other hazards besides heat. Increased sun exposure raises the risk of skin cancer, making sun protection essential. Thunderstorms and lightning are more common in the summer, posing a danger to workers in open areas or operating heavy equipment. Clear protocols for stopping work and seeking shelter during severe weather are important. Open, welcome communication is essential here as well.
Hot weather also brings important considerations for equipment safety. Machinery can easily overheat, causing burns. Regular maintenance inspections and proper handling procedures can reduce such risks. Also, road crews must remain aware and vigilant about traffic safety, as summer will bring increased travel and sometimes distracted drivers.
Heat and summer safety for workers requires a combination of preparation, awareness and dynamic intent. By focusing on hydration, proper clothing, smart scheduling, training and employer support, the risks associated with hot weather can be significantly reduced. Protecting workers from heat-related dangers is not only a duty but a commitment to their health, well-being and ability to serve the community effectively.
For more information or for assistance in reviewing current policies or implementing best practices for heat safety, please email losscontrol@masc.sc.