Knowing how to respond when you find a person on a job site is having sudden cardiac arrest, or a heart attack, can improve the person’s chances of survival.
Immediately call 9-1-1, or have someone nearby call 9-1-1, and immediately begin cardiopulmonary resuscitation (CPR).
Before beginning, make sure the person is unresponsive – not breathing, no pulse and, when you shake the person and shout at them, there is no response. Sometimes a person who is having cardiac arrest makes a grunting or snoring type breathing sound for several minutes.
If the person is not breathing normally, coughing or moving, begin chest compressions. Push down 2 to 2.4 inches in the center of the chest...

Also, workers who are performing tasks near overhead equipment should also be aware of overhead hazards. A falling load can cause serious injury or death.
Nearly one in four fatal falls in construction involve ladders, according to the latest statistics provided by the Occupational Health and Safety Administration.