Nearly 6.5 million people work at approximately 252,000 construction sites across the nation on any given day. The fatal injury rate for the construction industry is higher than the national average in this category for all industries. Potential hazards for workers in construction include: Falls (from heights); Trench collapse; Scaffold collapse; Electric shock and arc flash/arc blast; Failure to use proper personal protective equipment; and Repetitive motion injuries. Employers are responsible for providing a safe and healthful workplace for their employees. OSHA's role is to assure the safety and health of America's workers by setting and enforcing standards; providing training, outreach and education; establishing partnerships; and encouraging continual improvement in workplace safety and health. This informational booklet provides a general overview of a particular topic related to OSHA standards.