Falls constitute one of the most common causes of construction accidents. OSHA lists falling as one of the Fatal Four Hazards in the construction industry. Many fatalities result from falls, and they make up 33 percent of all cases. A fall of even six feet can lead to serious injuries and death. An object hits many workers every year. The object could have been falling, flying, or swinging. Someone may have forgotten to turn on the parking brake, and the vehicle started rolling. If an employee stands in the way of the vehicle, a collision may result. A lack of training for specific equipment can lead to a construction accident. Employers need to teach workers how to use debris nets and machinery correctly. People also should know how to secure an object to avoid it from striking another person. Electrocution constitutes another one of the Fatal Four. Electrocution happens more frequently than one would believe. A person could have come into direct contact with a power line. Sometimes, a construction site may have exposed wires. If workers do not know how to handle an electrical source properly, they could get electrocuted. Occasionally, a heavy piece of equipment pins a construction worker to a wall or another immovable object. The accident can happen suddenly and quickly, and the victim may not have enough time to react. Cave-ins constitute a serious concern during excavations. Sometimes, people fall off a ladder and get hurt. Power tools can lead to an accident as well.