The most common construction hazards, including OSHA’s Focus Four, with practical controls, inspections, training and daily routines for crews.
Construction sites change every day. New trades arrive, the structure grows, weather changes conditions and crews work at height, near heavy equipment and with power tools. Many workers are new to the site or the company. That combination makes planning and daily checks more important than in almost any other industry.
| Hazard | Typical causes | Key controls |
|---|---|---|
| Falls | Unprotected edges, holes, ladders, scaffolds, roofs | Guardrails, covers, personal fall arrest systems, ladder and scaffold inspections, training |
| Struck-by | Moving vehicles and equipment, falling objects, flying debris | Traffic plans, spotters, high-visibility clothing, toe boards, debris nets, hard hats |
| Caught-in or between | Trench collapses, unguarded machinery, equipment pinning workers | Protective systems in trenches, machine guarding, lockout, staying clear of swing radius |
| Electrocution | Overhead power lines, damaged cords, unlocked circuits | Clearance from lines, GFCIs, cord inspection, lockout/tagout, qualified electricians |
OSHA’s construction standards set specific requirements for each, such as fall protection at 6 feet or more above a lower level in most construction work, and protective systems for trenches 5 feet deep or more unless the excavation is in stable rock.
| Hazard | Controls |
|---|---|
| Trenching and excavation | Competent person inspections, shoring, sloping or trench boxes, safe access and egress |
| Respirable crystalline silica | Water or vacuum dust controls, respiratory protection, a written exposure control plan |
| Noise | Quieter equipment, hearing protection, limiting exposure time |
| Heat and cold | Water, rest and shade, acclimatization for new workers, warm breaks in cold weather |
| Manual handling | Mechanical aids, team lifts, planning deliveries close to where materials are used |
| Hazardous chemicals | Safety data sheets, labeling, training, ventilation, PPE |
| Fire | Hot work permits, fire extinguishers, housekeeping |
| Housekeeping | Clear walkways, material storage, debris removal to prevent trips and falls |
Most serious incidents are prevented before anyone picks up a tool. Plan each phase:
Use a pre-construction checklist and hold a pre-task briefing for high-risk work.
Conditions change daily, so checks must too. Typical inspections include:
A weekly site safety inspection gives supervisors a wider view, and a Take 5 checklist helps workers stop and think before a task.
Workers need training before they face a hazard, in a language and vocabulary they understand. Many contractors hold weekly toolbox talks: five to fifteen minutes on one topic, linked to the work that week. Our toolbox talks guide and toolbox talk template make it easy. Record attendance and keep certificates, such as fall protection or equipment operator training, up to date.
Most construction sites have several employers working side by side. Under OSHA’s multi-employer citation policy, more than one employer can be responsible for a hazard: the one that created it, the one whose workers are exposed, the one responsible for correcting it and the one with general control of the site. In practice, that means the general contractor and every subcontractor share an interest in each other’s safety. Agree on site rules at the start, share hazard information in daily coordination meetings, check that subcontractor workers have been trained for their tasks and include them in site inductions and toolbox talks.
A framing subcontractor on a three-story apartment job noticed that floor openings were being uncovered by other trades during the day. Instead of only reminding its own crew, the foreman raised it at the general contractor’s morning coordination meeting. The site adopted secured, labeled hole covers and a rule that any trade removing one must replace it before leaving the area. The foreman added a hole-cover check to the daily inspection task, with a photo, and covered the topic in that week’s toolbox talk for all trades.
Long days, early starts and overtime increase the risk of mistakes. Heat adds to the danger, especially for new workers who are not acclimatized. Watch hours, plan breaks and rotate heavy tasks. Several states have their own heat illness rules. Accurate time records help you see who is working long weeks before fatigue becomes a problem.
Every worker should know they can stop a task they believe is unsafe, without punishment. Supervisors set the tone: if the foreman skips the harness to save time, the crew will too. Thank people who raise concerns, investigate near misses and share lessons with all crews. Retaliating against workers for reporting safety concerns or injuries is illegal.
Report a work-related fatality to OSHA within 8 hours and an in-patient hospitalization, amputation or loss of an eye within 24 hours. Most construction employers with more than 10 employees must keep OSHA injury and illness records. Use an accident investigation report to find causes and prevent repeats. See OSHA Form 300.
EZTime runs site inspections and pre-task checks as recurring tasks with photo proof, stores training and certification records with expiry reminders in each digital employee file, and sends safety announcements to the crews on each site. GPS and NFC clock-in shows who is on site, which matters in an emergency headcount.
Falls, struck-by, caught-in or between, and electrocution.
Falls are consistently the leading cause of construction worker deaths.
Under OSHA’s construction standards, generally at 6 feet or more above a lower level, with some exceptions and different rules for scaffolds and ladders.
Generally at 5 feet deep or more, unless it is made entirely in stable rock. A competent person must inspect excavations.
Many contractors hold them weekly, linked to the work planned for that week.
EZTime runs site checks as tasks with photos and keeps training records current.