KEY TAKEAWAYS
An unguarded floor opening is one of the most clearly regulated hazards in construction, and one of the most frequently litigated. The New York Industrial Code requires every hazardous opening a person could step or fall into to be guarded by a substantial cover fastened in place or by a safety railing, and federal rules add their own cover and guardrail criteria. A worker who falls through an unguarded opening in New York can generally pursue claims under both Labor Law 240 and Labor Law 241(6) against the property owner and general contractor, in addition to workers' compensation.
A floor opening is a hazard everyone on the job site already knows about. Someone cut it, someone else covered it, and a third person moved the cover to run a line through. By the time a worker steps backward onto a sheet of plywood that was never fastened down, the opening has been there for weeks and nobody has treated it as urgent.
That familiarity is why these falls are common, and also why the law treats them as preventable. Both New York and federal rules say exactly what has to happen around an opening, and the fall injury lawyers at Hofmann & Schweitzer build these cases around the gap between those rules and what was on the deck.
What Counts as an Unguarded Floor Opening?
The two systems define it differently, and both can matter in one case.
Federal construction rules define a hole as a gap or void two inches or more in its least dimension in a floor, roof, or other walking surface — far smaller than most workers assume, and broad enough to capture core-drilled penetrations, sleeve openings, and deck gaps.
The New York Industrial Code uses the phrase "hazardous opening into which a person may step or fall." Courts read that to mean an opening of significant depth and size, generally one large enough to fall through. That distinction is litigated constantly, so the size and depth should be documented before the deck changes.
In practice, the openings that injure workers are:
- Stair and elevator shaft openings on partly completed floors
- Core-drilled and sleeved penetrations for piping and conduit
- Skylight and roof hatch openings, treated as holes, not walking surfaces
- Openings left for hoists, chutes, and equipment drops
- Gaps between decking sheets and at the perimeter of slabs
- Sump and vault openings in mechanical spaces
What Does the Law Require Around a Floor Opening?
Under the New York Industrial Code
The Industrial Code provision governing hazardous openings is one of the most litigated rules in Part 23, and it is written in three layers.
First, every hazardous opening a person may step or fall into must be guarded by a substantial cover fastened in place, or by a safety railing built to the Code's own specification. Second, where work in progress requires free access, a barrier or railing must guard the opening and the access point must be a substantial gate that swings away from it and stays latched. Third, where workers must work close to the edge, they have to be protected by one of three measures: two-inch full-size planking, or equivalent material, not more than one floor or 15 feet below the opening, whichever is less; an approved life net not more than five feet beneath it; or an approved safety belt and lifeline secured to a substantial fixed anchorage.
The Code also specifies what a compliant safety railing is: a two-inch by four-inch handrail 36 to 42 inches above the walking level, posts no more than eight feet apart, a midrail, and a toeboard. A rope strung between two columns does not qualify.
Separate provisions require permanent and temporary floors to be installed as erection progresses, and cap the distance between the erection floor and the floor below.
Under Federal Construction Rules
Federal rules address holes three separate ways. Workers must be protected from falling through holes, including skylights, more than six feet above a lower level, by fall arrest systems, covers, or guardrails. They must be protected from tripping in or stepping through holes by covers — a requirement with no minimum depth. And workers below must be protected from objects falling through holes. OSHA's duty to have fall protection standard lists each separately.
The criteria for the cover itself are specific. It must support at least twice the weight of the workers, equipment, and materials that could be on it at once, or twice the maximum axle load in a roadway. It must be secured against displacement by wind, equipment, or workers. And it must be color-coded or marked with the word HOLE or COVER. An unmarked, unsecured sheet of plywood meets none of these. It’s important to note that open edges have different, though companion, rules.
Why Do These Cases Involve Both Labor Law 240 and 241(6)?
A fall through a floor opening is an elevation-related injury, which brings it within Labor Law 240 — the Scaffold Law. That statute imposes absolute liability on owners and general contractors when a gravity-related risk injures a worker and adequate safety devices were not provided, and the worker's own comparative fault does not defeat the claim.
At the same time, the hazardous-opening provision of the Industrial Code is a specific, concrete command, which makes it a strong predicate for a Labor Law 241(6) claim. Running both theories matters, because they fail in different ways. A Section 240 claim can founder on arguments about whether the fall was truly elevation-related; a Section 241(6) claim can founder on whether the opening was large enough to be "hazardous." The broader framework is set out in our discussion of the safety rules construction contractors cannot ignore.
Who Can Be Held Responsible?
Rarely one company. The parties that typically appear are:
- The property owner, under the non-delegable duties in Labor Law 240 and 241(6)
- The general contractor or construction manager responsible for safety
- The subcontractor whose crew created the opening and left it unguarded
- The trade that removed a cover to run its own work through and never replaced it
- The site safety consultant whose logs recorded the opening as guarded
- A staffing agency or labor broker, depending on the structure
What decides most of these cases is not whether the opening was dangerous, but who created it, who was responsible for covering it, and who last touched the cover. Prevention is key.
How Does a New Jersey Floor Opening Fall Differ?
New Jersey has no Scaffold Law and no Industrial Code analogue. A worker who falls through an unguarded opening there receives workers' compensation from the employer and must prove ordinary negligence against any third party. Federal fall protection rules still apply and still set the standard of care. For someone who lives in one state and works in the other, which law governs can change the value of the claim substantially.
What Evidence Matters After a Fall Through a Floor Opening?
The deck gets repaired fast. Within days the opening is framed, decked, or closed, and the plywood is in a dumpster. What preserves the claim:
- Photographs of the opening, its dimensions, the fall distance, and whatever was covering it
- The cover itself, if it can be located and set aside
- Daily reports and site safety logs for the days before the fall
- Records showing which trade created the opening, and when
- Toolbox talk sign-in sheets and hazard identification for that floor
- Building department and inspection records, including any prior complaint
- The names of everyone working that floor that day
These falls tend to produce injuries that reshape a life rather than a season: spinal fractures, traumatic brain injuries, and complex orthopedic damage from landing on rebar, formwork, or concrete. In those cases the gap between a workers' compensation award and a full third-party recovery is measured in decades of care.