Understanding Your “Right-to-Know”: What is the Meaning of HazCom?
HazCom is the common, short name for the Hazard Communication Standard (HCS), which is the cornerstone of chemical safety in the United States. This standard, enforced by OSHA, is often referred to as the “Right-to-Know” law because its primary purpose is to ensure that employees are fully informed about the hazardous chemicals in their workplace.
The official OSHA standard for HazCom is codified under 29 CFR 1910.1200. Compliance with this standard is not optional—it is mandatory for virtually all employers whose workers may be exposed to hazardous chemicals under normal conditions or during foreseeable emergencies.
The Core of Compliance: What are the 5 Requirements for HazCom?
To achieve total compliance with the HCS, employers must implement a comprehensive program built on five essential requirements:
- Written HazCom Program: A documented plan outlining how your facility meets all aspects of the standard (labeling, SDS access, training, etc.).
- Chemical Inventory List: Maintaining an accurate, complete list of all hazardous chemicals present on-site.
- Container Labeling: Ensuring every container is labeled with the specific GHS-required elements (pictograms, signal word, etc.).
- Safety Data Sheets (SDSs): Providing immediate, readily accessible 16-section SDSs for every listed chemical.
- Employee Training: Ensuring all employees exposed to chemicals are trained on chemical hazards and how to safely handle and interpret hazard information.
GHS Integration: The Global Language of Chemical Safety
On May 20, 2024, the Occupational Safety and Health Administration (OSHA) amended the Hazard Communication Standard (HCS) to align with the 7th Revised Edition of the UN’s Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The amendment includes elements from the 8th Revised Edition of the GHS and retains certain U.S.-specific requirements.
What is GHS in HazCom?
GHS provides an international, consistent system for classifying chemical hazards and communicating that information on labels and Safety Data Sheets (SDSs).
Is GHS Mandatory in the US?
Yes, the GHS is mandatory in the US as incorporated into OSHA’s Hazard Communication Standard (29 CFR 1910.1200). Companies must use GHS criteria for classification, labeling, and SDS formatting.
The Three Types of GHS Hazards
GHS classifies chemical hazards into three broad categories:
- Physical Hazards: Hazards based on the chemical’s physical properties (e.g., flammables, explosives, oxidizers).
- Health Hazards: Effects on the body (e.g., corrosives, carcinogens, toxins).
- Environmental Hazards: (Though this category is generally not enforced by OSHA, it is included on GHS-compliant SDSs).
Understanding GHS Labels: What are the 6 GHS Label Requirements?
Every GHS-compliant container label must clearly display these six standardized elements:
- Product Identifier: The chemical name or code.
- Signal Word: “Danger” (for more severe hazards) or “Warning” (for less severe hazards).
- Hazard Statement(s): A standardized phrase describing the nature of the hazard (e.g., “Highly flammable liquid and vapor”).
- Pictogram(s): Standardized red-diamond icons representing specific hazards.
- Precautionary Statement(s): Instructions on handling and storage to minimize risk.
- Supplier Identification: The name, address, and telephone number of the manufacturer or importer.
Training and Health Hazards
Who Needs HazCom Training?
Any employee who may be exposed to hazardous chemicals in their work area must receive HazCom training. This must happen before their initial work assignment and whenever a new physical or health hazard is introduced into their work environment.
What is a HazCom Health Hazard?
A health hazard under HazCom is a chemical that can cause acute or chronic health effects, such as carcinogens, irritants, sensitizers, or agents that damage specific organs (e.g., liver, kidneys, lungs). Training is vital for employees to recognize these hazards and implement proper personal protection.
Achieve Total Chemical Compliance with Expert Support
The complexity of classifying hazards, creating GHS-compliant labels, and maintaining up-to-date Safety Data Sheets (SDSs) often requires specialized expertise, especially in a global supply chain.
Ensuring your chemical portfolio is compliant with the US Hazard Communication Standard (HCS) saves lives, prevents fines, and maintains your company’s operational integrity.
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Published November 1st, 2025
This article was generated with the assistance of Artificial Intelligence.