OSHA GHS Label Requirements: Elements, Pictograms, and Format

OSHA’s GHS label requirements come from the Hazard Communication Standard at 29 CFR 1910.1200(f)(1), and they set six elements that must appear on every container of hazardous chemicals leaving a workplace: a product identifier, a signal word, hazard statements, pictograms, precautionary statements, and the supplier’s name, U.S. address, and U.S. phone number. Miss one and the label fails federal requirements.¹ The standard was updated in 2024 to align with GHS Revision 7, with compliance deadlines that now run into May 2026 and beyond.

The Six Required Label Elements

Each element does a specific job, and together they let a worker identify a chemical, size up its hazards, and know who to call.

Product identifier. The chemical’s name or code, matching the identifier on its Safety Data Sheet so the container and the SDS can be cross-referenced.
Signal word. Either “Danger” for more severe hazards or “Warning” for less severe ones. Only one signal word per label, and no substitutes.
Hazard statements. Standardized phrases such as “causes serious eye damage” or “may cause cancer.” They are assigned by the chemical’s classification, not drafted by the manufacturer.
Pictograms. Red-bordered diamond symbols that show hazard categories at a glance.
Precautionary statements. Recommended measures for handling, storage, disposal, and first aid, also driven by classification.
Supplier identification. The name, U.S. address, and U.S. telephone number of the manufacturer, importer, or other responsible party.

All six must appear together on the container. The product identifier is what ties the label to the SDS, where a worker or first responder finds exposure limits, toxicological data, and emergency procedures.

The Nine GHS Pictograms

GHS uses up to nine pictograms, each a black symbol on a white background inside a red diamond. Recognizing them quickly matters, because in a spill or exposure there is no time to read the fine print.²

Flame. Flammable liquids, gases, aerosols, and solids; self-heating chemicals; and substances that emit flammable gas on contact with water.
Flame over circle. Oxidizers, which can intensify a fire even without a separate fuel source.
Exploding bomb. Explosives, self-reactive chemicals, and certain organic peroxides.
Gas cylinder. Gases stored under pressure, including compressed, liquefied, and dissolved gases.
Corrosion. Chemicals that cause skin burns, serious eye damage, or corrode metals.
Skull and crossbones. Acutely toxic chemicals that can be fatal or toxic through a single exposure.
Health hazard. Longer-term dangers including carcinogens, reproductive toxins, respiratory sensitizers, and chemicals that damage specific organs over time.
Exclamation mark. Irritants, skin sensitizers, chemicals with narcotic effects, and substances harmful (but not fatal) in acute exposure.
Environment. Chemicals toxic to aquatic life. Not mandatory under OSHA’s standard, but common on labels from international suppliers.

A single chemical can trigger more than one pictogram. Something both acutely toxic and flammable will show both the skull-and-crossbones and the flame, and a worker who spots only one has missed half the hazard.

Format, Color, and Language Rules

The visual format is fixed. Every pictogram must be a black symbol on a white background inside a red diamond-shaped border (sometimes called a “square-on-point”). The color scheme and shape are mandatory on shipped container labels, and that uniformity is what lets someone identify a hazard from across a warehouse.²

Label text must be in English, prominently displayed, and legible under normal working conditions. Other languages may be added for workers who speak them, but English must always be present.¹ Information cannot be hidden on a fold or placed where routine handling would cover it up. If a worker cannot read the label while doing the job, the label isn’t compliant.

When the Container Is Too Small

OSHA does not waive labeling for tiny containers; it allows different formats. Manufacturers can use pull-out labels, fold-back labels, or tags to fit all six elements onto the immediate container.³

When even those methods will not work, the small container must at minimum show the product identifier, pictograms, signal word, and the manufacturer’s name and phone number, along with a statement directing the user to the outer packaging for the full label. The outer packaging must carry all six required elements and must remain with the container. OSHA also requires the outer packaging to state clearly that the small container should be stored inside it. Toss the box and the full hazard information disappears, which is exactly what this rule tries to prevent.

Workplace and Secondary Container Labels

Once a shipment arrives, the original label must stay intact. But employers also use secondary containers, such as spray bottles, buckets, and smaller vessels for daily work. Those still need labels, with more flexibility on format.

Under 29 CFR 1910.1200(f)(6), a workplace container must carry either the full shipped-label information or the product identifier along with words, pictures, or symbols that communicate the general hazards. The simplified label works only when it is paired with the rest of the employer’s hazard communication program, particularly Safety Data Sheets, so employees have access to specific physical and health hazard information.¹

This is where alternative systems like NFPA 704 diamonds and HMIS color bars come in. OSHA allows employers to use these on workplace labels as long as they are consistent with the Hazard Communication Standard and employees have immediate access to specific hazard information through training and SDSs.⁴ An employer using NFPA or HMIS must train workers on that system. A colored diamond on a bottle means nothing if no one has been taught how to read it.

The Immediate-Use Exemption

One narrow situation requires no label. Under 29 CFR 1910.1200(f)(8), a portable container does not need a label when an employee transfers a hazardous chemical from a labeled container and the transferred chemical is intended only for that employee’s immediate use.¹

The exemption is narrower than most people assume. The person who poured the chemical must be the person using it, and it must be used promptly. If the container is set down and someone else picks it up, or if it sits overnight, the exemption is gone and the container needs a label. An unlabeled bottle that has been sitting on a shelf since last Tuesday is not “immediate use.”

Keeping Labels Legible

Employers must keep incoming container labels intact and legible for as long as the chemical is in the workplace. Removing or defacing a label on an incoming container is a direct violation of the standard.⁵ If a label becomes unreadable from splashes, wear, or sun exposure, it has to be replaced.

Chemical manufacturers and importers carry a separate duty: when they learn significant new information about a chemical’s hazards, they must update the label within six months so later shipments reflect current safety data. Workplace labels and other warning forms must stay legible, in English, and prominently displayed throughout each work shift.¹

Penalties for Labeling Violations

OSHA treats labeling failures as serious violations when they create a substantial probability of injury or illness. As of 2025, the maximum penalty for a serious violation is $16,550 per instance, and the planned 2026 inflation adjustment was cancelled, so that figure stands.⁶ Each unlabeled or mislabeled container can be cited separately, so a facility with a dozen noncompliant containers could see fines well over $100,000 from a single inspection.

Willful violations, where an employer knowingly ignores the labeling requirements, carry penalties up to $165,514 per violation, with a minimum of $11,823.⁷ Repeated violations within five years of the original citation face the same maximum. Labeling is one of the most frequently cited Hazard Communication problems, partly because inspectors can see an unlabeled container from across the room.

The 2024 Update and Current Deadlines

OSHA published a major revision to the Hazard Communication Standard on May 20, 2024, aligning it with GHS Revision 7. The update adds new hazard classifications, including desensitized explosives, and improves the information required on labels and Safety Data Sheets.⁸

On January 15, 2026, OSHA extended the compliance deadlines. Chemical manufacturers, importers, and distributors now have until May 19, 2026, to evaluate certain substances under the new classifications, and all other compliance dates were pushed back by four months as well.⁹

Until the new deadlines arrive, companies can comply with the previous version of the standard, the updated 2024 version, or both. Workers may see labels formatted under either version during the transition, so employers should make sure their hazard communication programs cover both formats until the switch is complete.

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eCFR. 29 CFR 1910.1200 – Hazard Communication
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Occupational Safety and Health Administration. HCS Pictograms and Hazards Quick Card
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Occupational Safety and Health Administration. NIST Labeling of Small Packages
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Occupational Safety and Health Administration. Hazard Communication Standard – Labels and Pictograms
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Occupational Safety and Health Administration. 29 CFR 1910.1200 – Hazard Communication
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Occupational Safety and Health Administration. OSHA Penalties
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Occupational Safety and Health Administration. US Department of Labor Announces Adjusted OSHA Civil Penalty Amounts for 2025
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Occupational Safety and Health Administration. OSHA’s Final Rule to Amend the Hazard Communication Standard
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Occupational Safety and Health Administration. HCS 2024 Compliance Date Extension Notice