OSHA Chemical Label Requirements: Elements, 2024 Update, Penalties

OSHA chemical label requirements are set out in the Hazard Communication Standard at 29 CFR 1910.1200, which requires every shipped container of a hazardous chemical to carry six pieces of information: a product identifier, a signal word, hazard pictograms, hazard statements, precautionary statements, and the supplier’s U.S. name, address, and phone number.¹ Containers used inside a workplace after a chemical has been transferred out of its original packaging follow a lighter version of the same rules. Miss any of it and OSHA can cite each container as a separate violation.

The Six Required Elements on a Shipped Label

Chemical manufacturers, importers, and distributors have to attach a label with all six elements before a container leaves their facility. All six must be prominently displayed and written in English; other languages can be added, but English is not optional.²

Product identifier. The chemical name, code number, or batch number. It must match the identifier on the Safety Data Sheet so workers can cross-reference the two.
Signal word. Either “Danger” for more severe hazards or “Warning” for less severe ones. Only one appears on any given label.
Pictograms. Red-bordered diamonds with a black symbol on a white background, one for each type of hazard the chemical presents.
Hazard statements. Standardized phrases describing the nature and severity of the hazard, such as “Causes serious eye damage” or “Highly flammable liquid and vapor.”
Precautionary statements. Instructions on safe handling, protective measures, storage, and first aid.
Supplier identification. The name, U.S. address, and U.S. telephone number of the manufacturer, importer, or other responsible party. The 2024 update made the U.S. address and phone requirement explicit.

A single chemical can carry several pictograms if it has more than one type of hazard, and each pictogram has to sit in a square set on a point (diamond orientation) with a red border wide enough to stand out.¹

What Each Pictogram Means

OSHA enforces eight pictograms. A ninth symbol exists for environmental hazards (a dead fish and tree), but OSHA does not require it; label preparers can include it voluntarily as supplementary information.³

Health Hazard (silhouette with a starburst on the chest): carcinogens, reproductive toxins, respiratory sensitizers, organ toxicity, aspiration hazards.
Flame: flammable liquids, gases, and solids; self-heating and self-reactive chemicals; organic peroxides.
Exclamation Mark: skin and eye irritants, skin sensitizers, lower-level acute toxicity, respiratory tract irritants.
Skull and Crossbones: severe acute toxicity where small exposures can cause serious illness or death.
Corrosion: chemicals that cause skin burns, serious eye damage, or corrode metals.
Exploding Bomb: explosives, certain self-reactive chemicals, certain organic peroxides.
Flame Over Circle: oxidizers that can start or intensify fires.
Gas Cylinder: gases stored under pressure.

Workplace Container Labels Are Different

When a worker pours a chemical from its shipped container into a smaller bottle, jug, or spray tank, that secondary container also needs a label, but the requirements are lighter. It must show the product identifier and enough words, pictures, or symbols to convey general information about the hazards.² Employers have flexibility in how they do it: a simplified version of the shipped label, color-coded tape, or a pre-printed workplace template are all acceptable, as long as an employee can look at the container and immediately understand the hazard.

One narrow exception. If you transfer a chemical into a portable container and use all of it yourself during the same work shift, no label is required. The moment another worker might use it, or it sits until the next shift, it needs a label.

Small Container Rules

The 2024 HCS update codified a sliding scale for tiny containers where a full label physically will not fit.⁴

100 ml or smaller. If pull-out labels, fold-back labels, or tags cannot carry the full information, the container itself must still show the product identifier, pictograms, signal word, and the manufacturer’s name and phone number, plus a statement directing users to the outer package for the complete hazard and precautionary information.
3 ml or smaller. If any label would interfere with normal use, only the product identifier is required on the container.

In both cases the immediate outer package (the box or wrapper the small container ships inside, not the shipping carton) must carry the full six-element label, cannot be discarded, and must instruct users to store the container inside it when not in use.

What the Standard Doesn’t Cover

Some things people assume need OSHA-format labels don’t. Pipes and piping systems are not considered “containers” and get no individual labels, though the employer’s written program still has to explain how workers will be informed about chemicals flowing through unlabeled pipes; pipe-marking, color coding, or posted signs typically fill that role.

Manufactured “articles” (items formed to a specific shape that release no more than trace amounts of a hazardous chemical during normal use) are exempt. A finished steel beam or a molded plastic housing qualifies. Raw stock that will be cut, welded, or ground downstream does not, because the processing releases dust or fumes.² For non-exempt solid materials like metal stock or whole grain, the label can travel with the initial shipment and doesn’t have to accompany repeat shipments to the same customer if the information hasn’t changed.

Untreated lumber whose only hazard is flammability is exempt; lumber treated with a hazardous chemical, or lumber that will be sawed into dust, is not. Nuisance particulates that pose no physical or health hazard are also exempt.

Keeping Labels Legible

Labels must be prominently displayed and easy to read. If one falls off, fades, or gets smeared past the point of legibility, the employer has to replace it immediately with a label carrying the required information.¹ Employers cannot remove or deface labels on incoming containers unless they immediately re-mark the container with the same information. In wet, sunny, or chemical-splash environments, that usually means synthetic label stock or heavily coated paper rather than plain paper.

The 2024 Update and New Deadlines

OSHA published a major revision on May 20, 2024, aligning the standard with Revision 7 of the Globally Harmonized System. The rule took effect July 19, 2024, and compliance is phased in over several years.⁵ In January 2026, OSHA extended every compliance deadline by four months.⁶ During the transition, manufacturers, importers, distributors, and employers may comply with the previous version, the updated version, or both.

The label-related changes worth knowing:

The new small container provision at 1910.1200(f)(12) formally covers containers of 100 ml or less and 3 ml or less.
Labels for bulk shipments can now be transmitted electronically, if the receiving party agrees and workers can access a printed copy immediately on arrival.
When a Department of Transportation pictogram already appears on a shipped container, the matching OSHA pictogram is allowed but no longer required.
When new hazard information emerges after a chemical has shipped, the manufacturer or importer can send updated labels with subsequent shipments rather than relabeling existing stock.
The supplier’s U.S. address and U.S. telephone number are now explicit label elements.

Employers also have to provide training on any newly identified hazards no later than November 2026.⁷

Penalties

Hazard Communication consistently ranks among OSHA’s top 10 most frequently cited standards, and labeling gaps are one of the usual reasons.⁸ As of 2025, the maximum penalty for a serious or other-than-serious violation is $16,550 per violation. A willful or repeated violation can reach $165,514 per violation.⁹ The figures are adjusted annually for inflation.

Each unlabeled or mislabeled container can be counted as a separate violation, so fines escalate quickly in a facility that stocks dozens of chemicals. Small and midsize employers who want a look before an inspector arrives can use OSHA’s free On-Site Consultation Program, which sends state-employed safety consultants at no cost. The consultations are confidential and kept separate from OSHA enforcement.¹⁰

1
eCFR. 29 CFR 1910.1200 – Hazard Communication
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Occupational Safety and Health Administration. 29 CFR 1910.1200 – Hazard Communication
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Occupational Safety and Health Administration. Hazard Communication Standard: Labels and Pictograms
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Occupational Safety and Health Administration. Hazard Communication Standard – Final Rule
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Federal Register. Hazard Communication Standard
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Occupational Safety and Health Administration. HCS 2024 Compliance Date Extension Notice
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eCFR. 29 CFR 1910.1200 – Hazard Communication
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Occupational Safety and Health Administration. Top 10 Most Frequently Cited Standards
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Occupational Safety and Health Administration. 2025 Annual Adjustments to OSHA Civil Penalties
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Occupational Safety and Health Administration. On-Site Consultation