The temperature's rising and doctors say many outdoor workers face an increased danger of on-the-job health problems.    

"The illnesses include heat cramps, heat exhaustion and heat stroke," said Dr. Stephen Dawkins, an Occupational Medicine Specialist.   

Dr. Dawkins says heat stroke is the most serious of the heat-related ailments.    

"They may be weak, they may be tired, they may have a headache, but their skin is dry and that means that they really have nothing more to sweat," he said.     

In that case, Dr. Dawkins says get out of the heat and seek immediate medical attention.    

"For heat exhaustion, a person becomes tired, they become lethargic, they might become a little disoriented, so they would feel, they would be sweating profusely," said Dr. Dawkins

Replacing lost fluids with water or an electrolyte solution, such as Gatorade, should help the symptoms. Similar treatment is recommended for heat cramps.   

"A heat cramp occurs if you're working outside and you're exerting yourself, and you're sweating, and with that sweat you're losing sodium and potentially potassium as well. that electrolyte imbalance leads to a muscle cramp," he said.

To prevent heat-related illnesses, Dr. Dawkins recommends taking frequent breaks in a shady location and drinking fluids at least once an hour.