NYCRR § 23-1.10: Hand Tool Safety Rules on New York Construction Sites

NYCRR § 23-1.10 is the New York State Industrial Code rule that governs hand tool safety on construction sites. It requires unpowered tools to be kept in sound condition. That means sharp edges, no mushroomed heads, and no cracked handles. It also requires power tools to have an accessible cut-off switch and proper grounding. When these rules are broken, the violation can support a lawsuit under New York Labor Law § 241(6).

The regulation is short, but it carries real legal weight. A worker hurt because a contractor ignored its requirements may have a claim for damages that goes beyond workers' compensation. This post breaks down what § 23-1.10 requires. It also covers who has to follow it, what violations look like on a real job site, and what an injured worker can do.

NYCRR § 23-1.10 is part of Part 23 of the New York State Industrial Code. That code is the body of construction safety rules enforced by the New York State Department of Labor (NYSDOL). These hand tool safety regulations in New York apply to construction, demolition, and excavation work statewide. That includes the thousands of sites across Queens and the rest of New York City. At The Orlow Firm, we've handled construction injury cases for over 40 years, and tool-related failures come up more often than most people expect.

What NYCRR § 23-1.10 Requires, Subsection by Subsection

The rule splits into two parts. One sets standards for unpowered hand tools, and the other sets standards for powered hand tools. You can read the full text at the source (12 NYCRR § 23-1.10). Here is what each provision means in plain English.

§ 23-1.10(a): Unpowered Tools

The text reads: "Edged tools shall be kept sharp and shall be maintained free from burrs and mushroomed heads. Split or loose tool handles shall not be used."

Three requirements come out of this short sentence:

• Edged tools must be kept sharp. Chisels, axes, and hatchets all qualify. A dull blade is not just an inconvenience under this rule. It's a violation.
• Tools must be free from burrs and mushroomed heads. A mushroomed head is a struck surface that has spread outward from repeated hammering, so the metal flares like the cap of a mushroom. Those flared edges can shear off and turn into flying fragments.
• Split or loose handles must not be used. This is a replacement requirement, not a repair-with-tape requirement. A cracked axe handle has to come out of service.

§ 23-1.10(b)(1): Power Tools Must Be Shut Off Before Servicing

Electric and pneumatic hand tools must be fully disconnected from their power source before any adjustments or repairs. For pneumatic (air-powered) tools, that means the air has to be shut off and the hose line pressure released. Not one or the other. There is one narrow exception: replacing bits in electric drills, a low-risk task workers do constantly.

The provision also requires that each tool have "a cut-off switch within easy reach of the operator." The operator should be able to kill power without stretching, fumbling, or reaching across the tool.

§ 23-1.10(b)(2): Power Lines and Hoses

Electrical cords and air supply lines must be guarded to prevent abrasion. They also have to be arranged so they don't create tripping hazards. On a busy site, this is not just a tidiness suggestion. Routing lines safely is a legal requirement under the code.

§ 23-1.10(b)(3): Grounding

Electrically operated hand tools must be grounded during use. The one exception is approved double-insulated portable hand tools, which are built to protect the operator without a separate ground. Worth noting: this exemption only applies to the grounding requirement in subsection (b)(3). It does not exempt a double-insulated tool from the rest of § 23-1.10.

Why These Rules Exist: The Injuries They Prevent

Every requirement in § 23-1.10 maps to a specific way workers get hurt. Understanding the connection makes the regulation easier to apply on a real job site.

A mushroomed chisel head is one of the most common and serious hand tool hazards. When the flared metal shears off under a hammer blow, the fragment can fly at high speed. It can cause eye injuries or cuts to the face. Dull cutting tools create a different problem. They force the worker to push harder, and the extra force leads to slips, deep cuts, and puncture wounds. A split or loose handle can let a tool break mid-swing. That can send the head flying or cause a fall when the worker loses control.

The powered-tool rules address risks that are just as serious. Power lines strung across a walkway with no guarding are a tripping hazard. When the cover wears through, a worker can be shocked. An ungrounded electric tool can deliver a fatal shock or cause bad electrical burns. And a power tool that isn't shut off before a repair can switch on by accident while a worker's hands are on the moving parts.

These risks are not rare. Safety data from OSHA and Bureau of Labor Statistics figures shows that hand tool accidents make up roughly 8 percent of all paid workplace injuries — about 100,000 hand tool accidents each year across the United States, with eye injuries and cuts among the leading types.

Who Is Responsible for Compliance

On a New York job site, primary responsibility for complying with Part 23 falls on the general contractor and the property owner. Under Labor Law § 241(6), they carry a non-delegable duty to provide reasonable and adequate protection for workers. In plain terms, they cannot escape liability by pointing to a subcontractor or arguing the work was someone else's job. There is a narrow exception for owners of one- and two-family dwellings who do not direct or control the work.

Subcontractors and trade foremen are responsible for the tools their own crews use. Workers are expected to report defective tools when they see them. But the legal responsibility for keeping the site safe rests with the parties in control of it. The NYSDOL enforces Part 23 through its Division of Safety and Health, which can inspect sites, issue violations, and assess fines.

One point worth being precise about: workers' compensation is generally the exclusive remedy against a direct employer in New York. That does not mean an injured worker has no other options. Claims against third parties, typically the general contractor and the property owner, remain available. That's where Labor Law § 241(6) comes in.

Common NYCRR § 23-1.10 Violations in Practice

The regulation reads cleanly on paper. On an active construction site, the hand tool failures tend to look like this:

• Chisels and punches with mushroomed heads still in daily use
• Axes and hatchets with split handles wrapped in tape (tape is not a legal repair)
• Power tools whose cut-off switch is broken, bypassed, or missing entirely
• Pneumatic tools serviced without releasing hose pressure before a blade or bit change
• Extension cords and air hoses run across walkways with no guarding
• Ungrounded electric tools used in wet or damp conditions, a frequent problem on NYC sites
• No tool-inspection protocol at all, so defects are never caught before the workday begins

These violations are often not isolated incidents. They tend to reflect a pattern of ignored safety protocols, and that pattern matters in litigation.

NYCRR § 23-1.10 and Labor Law § 241(6) Claims

This is where the regulation turns into a potential lawsuit. New York Labor Law § 241(6) puts a non-delegable duty on owners and general contractors to comply with the Industrial Code. But not every code provision can support a claim. To win, a plaintiff has to cite a sufficiently specific rule. That means a rule that identifies a concrete workplace danger and provides a concrete way to address it, rather than a general safety standard.

Courts have found provisions like § 23-1.10 specific enough to support § 241(6) claims. The rule names exact conditions: burrs, mushroomed heads, loose handles, unguarded lines, no cut-off switch. It also directs exact remedies: keep tools sharp, replace handles, disconnect before repair, guard lines, ground tools. The New York Court of Appeals clarified this two-part specificity test in its 2026 decision in Mann v. Mezuyon, LLC — holding that a code provision must both identify a specific safety concern and command a specific action to address it. Section 23-1.10 satisfies both parts of that test.

A § 241(6) claim has a real advantage. The injured worker does not have to prove the defendant was careless in the usual sense. They only have to show that the specific code rule was broken and that the break caused the injury. The money you can recover also goes well beyond what workers' compensation pays. Pain and suffering, lost future earnings, and full medical bills are all on the table in a third-party claim. Workers' comp does not cover those the same way.

How to Report a Violation of § 23-1.10

If you see a hand tool safety violation on a construction site, there are several routes to report it:

1. Report internally first, if it's safe to do so. Notify the site supervisor or safety officer.
2. File with NYSDOL. The Department of Labor accepts safety complaints online or by phone at 1-844-SAFE-NYS, and confidential complaints are accepted.
3. File with OSHA as a federal parallel route. Call 1-800-321-OSHA (6742) or file online at osha.gov/workers/file-complaint.
4. Document everything. Take photos of the defective tool, write notes, and collect witness contact information. If you can, preserve the tool itself.

Workers who report in good faith are protected from retaliation. Both the federal OSH Act § 11(c) and New York Labor Law § 740 prohibit an employer from firing or punishing a worker for raising a legitimate safety concern.

What to Do If You Were Injured

If a defective or poorly maintained hand tool has already hurt you, a few steps protect both your health and any potential claim:

1. Get medical attention immediately, even if the injury seems minor. Some injuries worsen, and prompt records matter.
2. Report the incident to your employer or supervisor. Reporting is required to preserve workers' compensation benefits.
3. Document the scene. Photograph the tool, your injury, and the surroundings, and collect witness contact information.
4. Preserve the defective tool. Do not let it be discarded, repaired, or altered.
5. Talk to an attorney experienced in New York construction law. A § 241(6) claim requires identifying the specific Industrial Code violation, so experience with these cases makes a real difference.

The consequences of tool and equipment failures on New York sites can be severe. In one case our firm handled, a worker suffered a fingertip amputation in a worksite injury and recovered $550,000. In another, debris fell from above and caused an injury that required shoulder surgery, resulting in a $750,000 recovery. Prior results do not guarantee a similar outcome.

Related Questions

What does NYCRR § 23-1.10 require for hand tools on construction sites?

It requires unpowered edged tools to be kept sharp and free of burrs and mushroomed heads, and bans split or loose handles. For power tools, it requires shut-off before servicing, an accessible cut-off switch, guarded lines, and grounding during use. Approved double-insulated tools are exempt from the grounding requirement only.

Who is responsible for hand tool safety on a New York construction site?

General contractors and property owners carry a non-delegable duty under Labor Law § 241(6) to comply with Part 23, including § 23-1.10. Subcontractors and foremen are responsible for their own crews' tools. The narrow exception is for owners of one- and two-family homes who do not direct or control the work.

What is a 'mushroomed head' on a hand tool and why is it dangerous?

A mushroomed head is a struck surface, like the top of a chisel or punch, that has spread and flared outward from repeated hammer blows. The flared metal can shear off under impact and become a high-speed projectile. That makes it a leading cause of eye injuries and facial lacerations on job sites. That's why § 23-1.10(a) bans it.

What is the difference between NYCRR § 23-1.10 and Labor Law § 241(6)?

NYCRR § 23-1.10 sets the specific hand tool safety standards on construction sites. Labor Law § 241(6) is the statute that lets an injured worker sue owners and general contractors for violating a sufficiently specific code rule. In short, § 23-1.10 is the rule that was broken, and § 241(6) is the legal path for bringing a claim.

Sources & Official Resources

New York Laws Cited

1. New York Labor Law § 241 — Construction, Excavation and Demolition Work
2. New York Labor Law § 740 — Retaliatory Action by Employers Prohibited

New York Industrial Code 3. 12 NYCRR Part 23 — Protection in Construction, Demolition and Excavation Operations (NY DOL)

Court Decisions 4. Mann v. Mezuyon, LLC — 2026 NY Slip Op 03257 (NY Court of Appeals)

Federal Laws & Resources 5. OSH Act § 11(c) — Whistleblower Protection (OSHA) 6. OSHA — File a Complaint

Helpful Resources 7. NY State DOL — Division of Safety and Health: File a Safety Complaint

Contact The Orlow Firm

If you've been hurt on a construction site by a defective or poorly maintained hand tool, you may have a claim that goes beyond workers' compensation. A violation of NYCRR § 23-1.10 can support a lawsuit under Labor Law § 241(6) against the general contractor or property owner. That path can recover damages workers' comp does not cover. The Orlow Firm has handled construction accident cases throughout Queens and New York City for over 40 years.

Call (646) 647-3398 for a free consultation. We work on contingency — you pay nothing unless we win.

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This article provides general information and is not legal advice. Every case is different. Contact an attorney to discuss your specific situation.