Struck-By & Caught-In/Between Construction Accident Lawyers

Struck-By and Caught-In/Between Accidents on Construction Sites

Struck-by and caught-in/between accidents are two of OSHA's "Fatal Four," the four hazard categories that cause the majority of construction deaths. The other two are falls and electrocution. A struck-by injury happens when a worker is hit by a moving object. A caught-in/between injury happens when a worker is crushed, pinned, or engulfed between objects. The two get confused constantly, and the difference is not academic.

The classification drives how the accident is investigated, which OSHA standards apply, and which parties end up liable. A falling tool and a collapsing trench produce very different evidence, very different breaches, and very different defendants.

An injured worker is rarely limited to workers' compensation. When someone other than the employer caused the harm, a separate third-party injury claim can recover the damages that workers' comp will not pay.

This page defines each category, separates the two hazard types, explains why the distinction changes the case, and walks through the OSHA standards and the parties who can be held responsible.

Struck-By Hazards on Construction Sites

A struck-by injury results when a moving object makes forcible contact with a worker. OSHA divides struck-by hazards into four sub-types, defined by how the object is moving at the moment of impact. The direction and source of that motion is what an investigator reconstructs first.

• Flying objects. A tool or fragment propelled through the air. Nail guns that misfire or recoil, abrasive grinder wheels that shatter, chips ejected by saws and chisels, and material thrown by compressed-air tools. Eye and head injuries dominate this sub-type.
• Falling objects. Tools, materials, or debris dropping from a height onto workers below. A wrench dropped from scaffolding, masonry sliding off a ledge, a load coming loose from a crane hook, or formwork giving way overhead. Head trauma and crush injuries are common.
• Swinging objects. A suspended or mechanically driven object that swings into the worker. A crane load that swings when the wind catches it, an excavator or crane boom rotating into the swing radius, or a load that pendulums during a lift. These injuries often happen when a worker stands inside an unmarked swing zone.
• Rolling objects. Vehicles, mobile equipment, or materials moving along the ground. A backing dump truck, a forklift turning blind, a loader, or pipe and stock rolling off a rack. Workers on foot near moving equipment are the usual victims.

Falling-object injuries that involve cranes and overhead lifts tie directly to rigging and load-securement failures. Rolling-object injuries frequently trace back to powered industrial trucks, which carry their own machine-guarding and operator-training rules. We handle the equipment side of these cases as part of our work on forklift and powered-industrial-truck injuries.

Caught-In/Between Hazards on Construction Sites

A caught-in/between injury results when a worker is squeezed, crushed, pinched, or compressed. The body is the thing that gets caught, rather than an object striking the body. OSHA distinguishes this category from struck-by precisely because the injury mechanism, and therefore the prevention, is different. The most common scenarios on a job site:

• Trench and excavation engulfment. An unprotected trench wall collapses and buries a worker. Soil is far heavier than it looks, and a cubic yard can weigh more than a small car. Cave-ins kill quickly through compression asphyxia. Engulfment also covers workers swallowed by grain, sand, or other flowable material in a hopper or pit.
• Unguarded machinery and pinch points. A hand, arm, or piece of clothing drawn into rotating gears, belts, augers, or rollers. Missing guards on saws, mixers, and power transmission equipment turn routine work into amputation and crush injuries.
• Caught between equipment and a fixed object. A worker pinned between a backing truck and a wall, between a swinging counterweight and a structure, or between two pieces of equipment. The space a worker thought was safe disappears in a second.
• Collapsing walls and stacked materials. Unbraced masonry, formwork, or improperly stacked materials toppling onto and pinning a worker.
• Equipment rollover. A bulldozer, loader, or other heavy machine tipping and pinning the operator, especially where rollover protective structures or seat belts are missing or unused.

Trench collapse is the deadliest caught-in scenario and turns almost entirely on whether the contractor used the required protective systems. We cover the cave-in cases in depth in our work on trench and excavation collapse injuries. Crush and pinch injuries to the hands and limbs frequently lead to limb-loss and amputation claims when guarding fails.

Why the Struck-By vs. Caught-In Distinction Matters

Getting the classification right is the first step in proving the case. The two hazard types point to different breaches and different responsible parties, so an investigator who labels the accident correctly knows where to look.

OSHA tracks and cites the two categories separately. A struck-by event sends the inspector toward overhead protection, load securement, swing-radius controls, and traffic management. A caught-in/between event sends the inspector toward trench protective systems, machine guards, rollover protection, and lockout procedures. The standard that gets cited shapes the negligence theory.

The hazard analysis differs too. A struck-by case reconstructs the path of a moving object: where it came from, what set it in motion, who was supposed to keep workers clear of it. A caught-in case reconstructs a confinement: what failed, what should have held, and what protective system was missing. Those are different evidence trails, different experts, and different documents.

The distinction also points to different defendants. A falling crane load implicates the rigging crew, the crane operator's employer, and the lift planner. An unguarded machine implicates the equipment manufacturer and whoever removed or failed to maintain the guard. A trench cave-in implicates the excavation contractor and the competent person who signed off on the dig. Naming the wrong cause names the wrong defendant.

OSHA Standards That Apply to Struck-By and Caught-In Hazards

OSHA's construction standards in 29 CFR Part 1926 set the rules that contractors are required to follow. A violation of a standard that caused the injury becomes powerful evidence of negligence. The standards most often at issue in these cases:

• Head protection (1926.100). Hard hats are required wherever there is a risk of head injury from falling or flying objects or from electrical contact. A missing or unenforced hard-hat requirement is a frequent struck-by citation.
• Overhead and falling-object protection. Toe boards, screens, guardrail systems, debris nets, canopies, and barricades are required to keep tools and materials from dropping onto workers below. Catch platforms and chutes control debris on multi-level sites.
• Barricades and controlled access zones. Swing radii, equipment paths, and overhead work areas have to be marked and kept clear of workers on foot. Spotters and signal persons direct equipment where sightlines are blocked.
• Machine guarding (1926.300 and 1926.302). Moving parts, points of operation, rotating equipment, and power transmission components must be guarded. Hand-held power tools and pneumatic tools have specific guarding and securement rules. Missing guards drive most caught-in machinery injuries.
• Backup alarms and spotters. Equipment with an obstructed rear view must use a working reverse-signal alarm or a spotter. Defective or disabled alarms appear repeatedly in struck-by and caught-between equipment cases.
• Excavation protective systems (1926 Subpart P). Trenches five feet deep or more require sloping, benching, shoring, or a trench box, and a competent person must inspect the excavation. Skipping protective systems is the central failure in cave-in cases.

A documented OSHA violation does not automatically win a case, but it anchors the breach. How a citation translates into civil liability is its own subject, which we cover in our work on using OSHA violations as evidence.

Who Is Liable for a Struck-By or Caught-In Accident

Most injured construction workers start with workers' compensation, which pays medical bills and a portion of lost wages without proving fault. Comp is also the trade-off that usually bars a worker from suing their own employer. The larger recovery, including pain and suffering, often comes from a third-party claim against someone other than the employer.

The difference between the two systems decides how a case is built. We break it down in our explanation of how a workers' comp claim differs from a personal injury claim, and we walk through the path to outside recovery in our overview of third-party injury claims for injured workers.

Parties who can share liability in a struck-by or caught-in case:

• The general contractor. The GC controls site safety, coordinates the trades, and is responsible for the overall hazard controls. A failure to barricade a swing zone, enforce overhead protection, or keep workers clear of equipment lands here.
• Subcontractors. The crew that dropped the load, dug the trench, or operated the equipment can be liable for the negligence of its own workers, separate from the injured worker's employer.
• Equipment manufacturers. When a machine reaches the worker without an adequate guard, with a defective backup alarm, or with a design that invites a caught-in injury, a product liability claim against the manufacturer is available regardless of the comp bar.
• The property owner. An owner who controls the premises or directs the work can be liable for hazards they created or failed to correct.

Crush, amputation, and engulfment injuries are severe, and the worst of them are life-altering. Cases involving lost limbs are handled through our amputation injury practice, and the most serious injuries fall under our catastrophic injury work. When a worker dies, the family's claim moves forward as a wrongful death case.

OSHA reports that struck-by hazards remain among the leading causes of construction fatalities, and the Bureau of Labor Statistics continues to record contact-with-objects-and-equipment events as a top source of fatal and serious work injuries year after year.^[1]

We do not take a construction case unless we believe in it and are prepared to try it. Justice for injured construction workers starts here.