▶What are the leading causes of death and serious injury in construction?
The 'fatal four' account for ~50% of construction deaths: (1) Falls from height (roofs, scaffolds, ladders), (2) Struck by moving objects (falling materials, vehicles, equipment), (3) Electrocution, (4) Caught-in/caught-between (trenches collapse, machinery). Falls are the single largest cause. Prevention requires hazard recognition (identify risks), engineering controls (barriers, guardrails), PPE (hard hat, safety glasses, harness for heights), and safe work procedures (never work alone, secure equipment, use fall protection above 6 feet).
▶What is fall protection and when is it required?
Fall protection is required when working at heights of 6 feet or more (some states require 4 feet). Methods include: (1) Guardrails (fixed barriers, industry standard for most work), (2) Safety net (below the work area), (3) Personal fall arrest system (PFAS: harness connected to a lanyard and anchor point rated for 5,000 lbs minimum). A harness alone does NOT stop a fall; it must be connected to a secure anchor. Inspecting the anchor and harness before each use is mandatory. Failure to use fall protection is OSHA's most common violation and leads to serious injuries and deaths.
▶What is lockout/tagout (LOTO) and why is it critical?
Lockout/tagout is the procedure of isolating an energy source (electrical, mechanical, pressure, thermal) before servicing equipment. You lock the breaker or disconnect in the OFF position with a personal padlock, then tag it with your name and date, preventing someone else from re-energizing it while you work. OSHA requires LOTO for any work inside an energized enclosure or on equipment that could cause injury if it suddenly started. Failure to LOTO is a leading cause of electrocution and equipment-related deaths. Every employee deserves to know their workplace practices LOTO to prevent this tragedy.
▶What is excavation safety and what causes cave-ins?
Trenches and excavations deeper than 5 feet require a protective system (shoring, sloping, or shielding) to prevent cave-ins. Soil type determines collapse risk: clay is more stable, sand and loose soil collapse easily. Water, vibration (nearby traffic), and nearby loading (stockpiles) increase risk. A cave-in kills nearly instantly because soil weight is tremendous (~100+ lbs per cubic foot); there's little chance of rescue. OSHA requires competent person inspection daily and protective systems for all deep excavations. Never, never enter an unprotected trench.
▶What personal protective equipment is required on a typical construction site?
Minimum (required on almost all sites): hard hat (protects from falling objects), safety glasses (protects eyes), gloves (protects hands from cuts and abrasions), high-visibility vest (makes you visible to equipment), and safety-toed boots (protects feet from dropped objects). Site-specific: ear protection (loud equipment), respiratory protection (dust, fumes), fall protection harness (heights), chemical-resistant gloves (hazardous materials). PPE is the 'last line of defense'; it's used when engineering controls (barriers, guards) and safe work practices fail. Proper PPE fit and use are essential; ill-fitting or neglected PPE provides no protection.
▶What is a confined space and why is it dangerous?
A confined space is a large enclosure (tank, silo, duct, trench) that is not designed for occupancy but may be entered for work. Hazards: (1) Low oxygen (consumed by rust or decomposition, no source of fresh air), (2) High oxygen (fire risk), (3) Toxic gases (hydrogen sulfide, methane, carbon monoxide from fuel). Entrants can lose consciousness in seconds. OSHA requires: (1) atmospheric testing before entry (oxygen, flammable gases, toxics), (2) ventilation (continuous fresh air), (3) rescue equipment and trained rescue team standing by, (4) communication with the entrant (two-way radio). Never enter a confined space without training and proper procedures.
▶What should I do if I witness an unsafe act or condition?
You have a responsibility to speak up: (1) If you see an unsafe act (someone not wearing a hard hat, standing on a ladder next to a power line), stop the work and inform the person and the supervisor. (2) If you see an unsafe condition (guardrail missing, exposed electrical wire, unstable scaffold), report it to the supervisor immediately. (3) If the supervisor doesn't respond, report to the general contractor or safety manager. (4) If there's imminent danger of death or serious injury, STOP WORK and don't resume until the hazard is corrected. Most injuries are preventable; speaking up saves lives. A strong safety culture supports reporting without fear of repercussions.