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The Only Two Arguments That Defeat a Labor Law 240 Claim
Comparative negligence is not a defense to a Scaffold Law claim. So the defense has to argue something else: that your own conduct was the sole proximate cause of the accident.
It is a narrow argument, and it fails whenever a safety device was missing, defective, or inadequate.
The reason is structural. A statutory violation and a worker's sole proximate cause cannot both be true at the same time. If the scaffold had no railing, the violation is a cause, and your conduct cannot be the only one.
Which is why the defense spends its energy trying to prove the equipment was fine and you chose not to use it.
A worker who was given the wrong device, an unusable device, or no instruction at all is not a recalcitrant worker. He is a worker the statute was written for.
What follows is what the two defenses actually require, where they fail, and what a case file needs to contain before the motion arrives.
- A statutory violation and sole proximate cause cannot coexist
- Blake, 1 N.Y.3d 280 (2003): no liability where the worker's act is the only cause
- Cahill, 4 N.Y.3d 35 (2004): the four-part recalcitrant worker test

Blake and the Rule That a Violation Cannot Coexist With Sole Cause
In Blake v. Neighborhood Housing Services of New York City, 1 N.Y.3d 280 (2003), the Court of Appeals confronted a worker who fell from an extension ladder he had set up himself, on a job where the ladder was in good condition and nothing about it failed.[1] The jury found no violation of Labor Law 240(1) and found the worker's own actions caused the fall.
The Court affirmed, and in doing so drew a line the defense bar has been standing on ever since: even where a worker is not recalcitrant, there is no liability under section 240(1) when there is no violation and the worker's own conduct is the sole proximate cause of the accident.
Read the condition carefully, because it is the whole case. The defense needs no violation. Where the statute was violated, the violation is a proximate cause by operation of law, and a plaintiff's conduct cannot be the sole cause of anything. The two positions cannot occupy the same ground.
That is why the first move in answering this defense is never about the worker's behavior. It is about the equipment: what was provided, whether it complied, and whether it was adequate for the task the worker was actually assigned. The absolute-liability framework it sits inside is explained on our page about the Labor Law 240 Scaffold Law.
Cahill and the Four Things the Defense Has to Prove
The recalcitrant worker version of the argument was sharpened in Cahill v. Triborough Bridge & Tunnel Authority, 4 N.Y.3d 35 (2004), where a worker climbed a form using rebar instead of the safety line and harness he had been trained and instructed to use, after being told once before to stop doing exactly that.[2]
The Court held a jury could find sole proximate cause where four things are established together:
- Adequate safety devices were available at the work site, even if not in the immediate vicinity of the accident.
- The worker knew they were available and knew he was expected to use them.
- He chose, for no good reason, not to use them.
- Had he used them, he would not have been injured.
All four. Miss one and the defense fails, and in real cases at least one is usually missing. The elements below are where these motions actually come apart.
"Available" Means Actually Available to You, Then
A harness locked in a gang box across the site at 6 a.m. is not available in any practical sense. Neither is a lift another trade is using, a ladder that is too short for the work, or an anchor point that does not exist on that floor. The defense produces a purchase order or a photograph of equipment somewhere on the job and calls that availability. The answer is testimony and documentation about what was reachable at that location, at that hour, for that task.
"Adequate" Is Judged Against the Actual Task
Equipment that is fine for one job is inadequate for another. A six-foot A-frame supplied for ten-foot work is a device that was furnished and still failed the statute. Where the device provided could not have done the job safely, the availability question never gets reached, because the statute was already violated.
"Expected to Use Them" Requires More Than a Poster
Courts look for a real, communicated expectation directed at this worker and this task. A general site rule in a safety manual nobody read, or a toolbox talk months earlier, is thin. Cahill itself involved a worker who had been specifically instructed and specifically corrected. The further the record gets from that, the weaker the defense.
"For No Good Reason" Is Where Most of These Die
This element carries the defense's weight and it is the hardest one to prove. A worker who did not tie off because there was nothing to tie off to, because the lanyard would not reach, because the foreman told him to hurry, because production pressure made the safe method impossible, or because he was never trained on the equipment, all had a reason. Reasons defeat this element. Judgment calls made under a schedule are not the same thing as choosing to be unsafe for no reason at all.
| What the Defense Says | What the Record Usually Shows |
|---|---|
| "Harnesses were on site." | No anchor point existed on that floor, so the harness had nothing to attach to. |
| "He was told to use a ladder, not the bucket." | The instruction was general, given weeks earlier, or contradicted by the foreman that morning. |
| "He set up the scaffold himself." | The components supplied were incomplete, and no competent person inspected it. |
| "He was working alone against the rules." | Working alone was the normal practice on that site and the schedule required it. |
| "He ignored the lift and free-climbed." | The lift was in use by another trade and the deadline did not move. |
The pattern is consistent. Almost every version of this defense assumes a jobsite where the safe method was there for the taking and everyone on the job knew it. Actual sites, especially the non-union residential work where most New York construction deaths occur, rarely look like that.
The Defenses That Are Not Available at All
Several arguments that work in an ordinary negligence case do nothing against a Scaffold Law claim, and it is worth knowing which ones so you do not concede them.
Comparative negligence is not a defense to Labor Law 240(1). A worker can be careless, distracted, or working faster than he should have been, and the claim is not reduced by any of it. That is a different rule from Labor Law 241(6), where comparative fault does cut the award, covered on our page about Industrial Code violations under 241(6).
Assumption of risk is not a defense. Neither is the argument that the worker was more experienced than his supervisor, or that he chose the method himself, when the equipment furnished was inadequate for the work.
An employer's own negligence does not shift liability off the owner or general contractor either. The duty under 240(1) is non-delegable, so hiring a careful subcontractor is not a shield. Where liability lands across the contracting chain is set out on our page about owner, GC, and construction manager liability.
Intoxication, Horseplay, and the Cases That Do Get Lost
Honesty matters more than optimism here. Some 240(1) cases do fail, and pretending otherwise helps no one deciding whether to bring one.
Where a worker was intoxicated, where he removed a functioning guardrail to save time with a compliant alternative available, where he stood on a bucket next to a proper ladder he had been told that morning to use, the sole proximate cause argument has real force. The same is true of horseplay and of using equipment for something it was obviously not built for.
Even then the question is whether the statute was also violated, because the defense still needs no violation at all. Cases with a bad fact and a real equipment failure are winnable. Cases with a bad fact and fully compliant equipment are the ones to be realistic about, and we will tell you which one you have.
We would rather tell someone in the first conversation that the bad fact in his case is going to decide it than take the file and tell him two years later. If you've been seriously injured, we're going to take your case, investigate what happened, and if anything the statute required was missing then it stops mattering that you did something wrong.
What to Say and Not Say in the First 48 Hours
This defense is built almost entirely out of the injured worker's own early statements. Accident reports, recorded statements to the site's insurer, and hospital intake notes get quoted at a deposition years later, when nobody remembers the context.
Describe what happened, not why you think it happened. "The ladder moved and I fell" is a fact. "I should have gotten a taller one" is an opinion that becomes an exhibit.
Do not guess at whether equipment was available somewhere on the site. Do not accept a form that says you were trained on something you were not trained on. Do not give a recorded statement to a liability adjuster before you have talked to a lawyer.
And keep the equipment in the case. Photograph the ladder, scaffold, harness, or lift where it sits, get the make and model, and tell someone before it is returned to the rental yard.
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How We Build a File the Defense Cannot Turn Into a Cahill Motion
These motions are usually decided on a record built in the first months, long before anyone reads a brief. Four things carry it.
The equipment itself, preserved and inspected, because a defect converts the case from an argument about the worker into an argument about the device. The site documents, meaning the site safety plan, the daily reports, the toolbox talk sign-in sheets, the certified payroll showing who was working where, and the training records the defense will claim exist. The other trades, deposed early, because the laborer on the next floor remembers what equipment was on the job that week and has no reason to shade it. And the plaintiff's own account, taken carefully and consistently from the start.
Where the accident also involved an Industrial Code violation or a defective product, the case gets a second and third road to liability that a sole proximate cause finding does not close. That is the practical reason to plead broadly, and it is covered in our overview of third-party liability in construction accidents.