Construction (29 CFR 1926)

Work Area Control

Verified vs OSHA sources · 2026-10-05

29 CFR 1926.1424

29 CFR 1926.1424 addresses the swing-radius hazard around a crane: the area where the rotating superstructure (the cab and counterweight) can strike a worker or pinch and crush them against another object. Where such accessible areas exist, the employer must train assigned employees on the hazard and erect and maintain control lines, warning lines, railings, or similar barriers to mark the hazard boundaries.

29 CFR 1926.1424 at a glance

The hazard: The rotating superstructure/counterweight striking or crushing workers
Where it applies: Accessible areas within the swing radius posing a foreseeable risk
Requirement: Train assigned employees AND mark the hazard boundaries with barriers
Barriers: Control lines, warning lines, railings, or similar
Deadliest form: Being caught between the counterweight and a fixed object
Max penalty (2026): $16,550 per serious violation; $165,514 per willful

What 29 CFR 1926.1424 requires (plain English)

29 CFR 1926.1424 addresses "work area control": specifically the swing-radius hazard created by a crane's rotating superstructure. As a crane rotates, the cab and especially the counterweight sweep through an arc, and a worker in that arc can be struck, or pinched and crushed between the swinging superstructure and another object.

The requirements apply where there are accessible areas in which the equipment's rotating superstructure (whether permanently or temporarily mounted) poses a reasonably foreseeable risk of striking and injuring an employee, or pinching or crushing an employee against another part of the equipment or another object. Where that risk exists, the employer must train each assigned employee to recognize the struck-by and pinch/crush hazard areas, and erect and maintain control lines, warning lines, railings, or similar barriers to mark the boundaries of the hazard areas.

The counterweight is the classic killer here: it swings out behind the crane and can crush a worker against a wall, vehicle, or structure with no warning. Barricading the swing radius and keeping workers out of it, combined with training so assigned employees understand the hazard, is what prevents these caught-in/between fatalities. 1926.1424 is a short section that addresses one of the most consistently deadly crane hazards.

What the source requires, in summary

The requirements in paragraph (a)(2) of this section apply where there are accessible areas in which the equipment's rotating superstructure (whether permanently or temporarily mounted) poses a reasonably foreseeable risk of: (i) Striking and injuring an employee; or (ii) Pinching/crushing an employee against another part of the equipment or another object.

29 CFR 1926.1424(a)(1)Summarized, not quoted: read the source for its operative wording.

Key facts about 29 CFR 1926.1424

1926.1424 controls the swing-radius hazard of a crane's rotating superstructure.
It applies where the superstructure poses a foreseeable struck-by or pinch/crush risk (1926.1424(a)(1)).
The employer must train assigned employees on the hazard areas.
The employer must mark hazard boundaries with control lines, warning lines, railings, or barriers.
The counterweight swing path is the deadliest part of the hazard.
Being caught between the counterweight and a fixed object is a leading crane fatality.
The controls are in paragraph (a)(2); the trigger conditions are in (a)(1).

Scope: who 29 CFR 1926.1424 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.1424
Enforcement status: In force and enforced
Jurisdiction: Federal OSHA (29 State-Plan jurisdictions may be stricter)

State-Plan states (e.g. California, Washington, Michigan) operate OSHA-approved programs that must be at least as effective as federal OSHA and frequently impose higher penalties or additional requirements. Confirm the rule as adopted in your state.

Key requirements of 29 CFR 1926.1424

#	Employer obligation
1	Restrict access to swing radius
2	Use barriers, warnings, or spotters
3	Protect workers in fall zone of suspended loads
4	Coordinate with other trades in area

Summarized from the text of 29 CFR 1926.1424. Always read the full regulation for the binding language.

Common Crane Work Area Control violations

Deficiencies OSHA cites under 29 CFR 1926.1424 include the ones below, in no particular order. Distinct deficiencies can be cited as separate items, and each serious item carries up to $16,550 (2026). Broader per-instance stacking exists but is a discretionary, case-by-case OSHA enforcement policy, not an automatic multiplier.

No barriers marking the swing-radius (superstructure/counterweight) hazard area (1926.1424(a)(2)).
Assigned employees not trained to recognize the struck-by/pinch-crush zones (1926.1424(a)(2)).
Workers allowed to enter the counterweight swing path during operation (1926.1424).
Barriers not maintained as the crane or work area moves (1926.1424(a)(2)).
Failing to evaluate accessible areas for the swing-radius risk (1926.1424(a)(1)).

The deadliest crane zone is often behind it: the counterweight swing path

People instinctively watch the load and the front of the crane, but 1926.1424 targets a hazard that kills from behind: the counterweight. As the superstructure rotates, the counterweight swings out and can pin a worker against a wall, a truck, a trench box, or a structure in an instant: a caught-in/between crushing that the victim usually never sees coming. The rule is not just "be careful"; it requires the employer to physically MARK the swing-radius hazard area with control lines, warning lines, railings, or barriers, AND to train assigned employees to recognize it. Barricading only the load-drop zone while leaving the counterweight's arc open is exactly the gap that produces these fatalities.

What OSHA inspectors look for

A compliance officer checks whether the swing-radius area behind and around the crane is barricaded and whether workers assigned near the crane were trained to recognize the struck-by and pinch/crush zones. Workers exposed to an unbarricaded counterweight swing path is the classic finding: a frequent cause of fatal crushing.

Example: how a violation is cited

A laborer walks behind a rotating crane counterweight in an unbarricaded area and is crushed between the swinging counterweight and a wall. OSHA cites 1926.1424 for failing to mark the swing-radius hazard area and train the worker, with penalties from $16,550, often elevated given the fatality.

Illustrative example, not a specific OSHA case.

Crane Work Area Control compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.1424. Each item is a key requirement OSHA may verify during an inspection.

Identify accessible areas where the rotating superstructure poses a struck-by or crush risk.
Erect control lines, warning lines, railings, or barriers to mark the hazard boundaries.
Include the counterweight swing path, especially near walls, vehicles, and structures.
Train each assigned employee to recognize the swing-radius hazard areas.
Maintain the barriers as the crane rotates or the work area changes.
Keep workers out of the swing radius during crane operation.

2026 penalties for 29 CFR 1926.1424

Maximums set by 29 CFR 1903.15(d). 2026 amounts unchanged from 2025 (no CPI adjustment; OMB M-26-11). Not an increase. The 2025 OSHA penalty levels remain in effect for 2026; OSHA made no inflation adjustment for 2026. 29 CFR 1903.15 identifies January 15, 2025 as the effective reference for these amounts, while OSHA's public penalties page currently references penalties assessed after Jan. 15, 2026.

Violation type	Minimum	Maximum	When it applies
Serious	$1,085	$16,550	Substantial probability of death or serious physical harm.
Other-Than-Serious	$0	$16,550	Relates to safety/health but unlikely to cause death or serious harm.
Willful	$11,823	$165,514	Intentional, knowing, or voluntary disregard of the requirement.
Repeated	$4,256	$165,514	A substantially similar violation cited within the last 5 years.
Failure to Abate	None	$16,550/day	up to $16,550 per day; total capped at 30x the daily amount (FOM Ch.6)

Swing-radius (work-area-control) violations are cited after crushing incidents and are frequently serious or willful. Serious violations reach $16,550 and willful or repeat violations $165,514.

Maximums and the willful minimum are set by 29 CFR 1903.15(d); the serious and repeated minimums are OSHA policy floors from its annual penalty adjustment memo. OSHA applies gravity-based and size, good-faith and history reductions (FOM CPL 02-00-164 Ch.6). Estimates only, not legal advice.

The business case for Crane Work Area Control compliance

The rotating superstructure of a crane sweeps a wide arc, and the counterweight in particular has crushed and killed workers who were caught between it and a fixed object as the crane swung. The victim often never sees it coming. 1926.1424's barriers and training keep workers out of that swing path, addressing one of the most lethal and preventable crane hazards on a site.

Free compliance tools for 29 CFR 1926.1424

Crane Lift Plan Calculator Job Hazard Analysis Builder Pre-Task Plan Generator

Crane Work Area Control penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.1424.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.1424

What is the crane swing-radius hazard?

It is the danger from a crane's rotating superstructure, the cab and especially the counterweight, striking a worker or crushing them against another object as the crane rotates. Under 1926.1424, where accessible areas pose this struck-by or pinch/crush risk, the employer must train assigned employees and mark the hazard boundaries with control lines, warning lines, railings, or barriers.

Do I have to barricade around a crane?

Yes, where the swing radius poses a hazard. 1926.1424 requires erecting and maintaining control lines, warning lines, railings, or similar barriers to mark the boundaries of the area where the rotating superstructure could strike or crush a worker: most importantly the counterweight swing path. Workers must be kept out of that area during operation.

Why is the crane counterweight so dangerous?

As the crane rotates, the counterweight swings out behind the machine and can pin a worker against a wall, vehicle, or structure with tremendous force and no warning. This caught-in/between crushing is one of the most lethal crane hazards, which is why 1926.1424 specifically requires barricading the swing-radius area and training workers to recognize it.

Who must be trained under 1926.1424?

Each employee assigned to work on or near the crane in the swing-radius area: the 'assigned employees.' Under 1926.1424, they must be trained to recognize the struck-by and pinch/crush hazard areas posed by the rotating superstructure, so they understand why the barriers are there and stay out of the swing path.

Regulatory history of 29 CFR 1926.1424

The work-area-control (swing-radius) requirements in 1926.1424 took effect with Subpart CC on November 8, 2010 (75 FR 47906). The provision responded to a persistent pattern of workers being crushed by rotating crane counterweights, a hazard the older 1926.550 addressed less specifically, by requiring both physical barriers and training for the swing-radius zone.

Related glossary terms

Key terms that appear in 29 CFR 1926.1424, each with a full plain-English explainer.

Caught-In/Between Struck-By Competent Person Qualified Person

Related guides & articles

Crane & Rigging Safety: OSHA Construction Guide Fall Protection in Construction: OSHA Guide 2026

Related OSHA standards

29 CFR 1926.251

Rigging Equipment

29 CFR 1926.1436

Derricks

29 CFR 1926.1400

Crane Rule Scope

29 CFR 1926.1404

Crane Assembly/Disassembly

Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-05 against eCFR, OSHA.gov, and the Federal Register).

This page is an educational summary, not legal advice. OSHA standards and penalty amounts change; confirm requirements against the current regulation and your applicable State-Plan before acting.

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OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.

Serious Violation

$16,550

per violation (max)

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