Hazard Communication Compliance: A Business Guide to OSHA's Right to Know

Introduction to OSHA Hazard Communication Standard (HazCom)

The OSHA Hazard Communication Standard (29 CFR 1910.1200) ensures employees' right to know and understand the hazards associated with chemicals in their workplace. The standard applies to chemical manufacturers, importers, and distributors, and to employers whose employees may be exposed to hazardous chemicals. Construction employers are covered by 29 CFR 1926.59, which is identical to 1910.1200. The standard aligns U.S. requirements with the Globally Harmonized System (GHS), which standardizes labels, pictograms, and Safety Data Sheets (SDS) to improve hazard communication across industries.

An effective HazCom program includes:

• A written plan describing how the employer handles labeling, SDS access, and employee training, along with methods for communicating hazards of non-routine tasks and to contractors.
• A current chemical inventory reflecting onsite chemicals, including maintenance and process materials, as well as consumer products used in a way or amount that exceeds typical consumer exposure.
• Labeling for all containers, including workplace or secondary containers, showing product identifiers and hazard information.
• Accessible SDS management ensuring 16-section Safety Data Sheets are readily available to employees on every shift, with prompt replacement when suppliers send updates.
• Chemical safety training at initial assignment and whenever a new chemical hazard is introduced, delivered in a format and language workers understand.

GHS alignment requires consistent hazard classification and label components: signal words ("Danger" or "Warning"), standardized hazard statements, pictograms (e.g., flame, corrosion, health hazard), and precautionary statements. For example, if a maintenance team transfers a flammable solvent into spray bottles, those containers must be labeled and workers must be trained on fire hazards, PPE, and safe handling procedures.

The written program must also address:

• Methods for informing employees of the hazards of non-routine tasks (e.g., tank cleaning) and of chemicals in unlabeled pipes.
• Methods for sharing hazard information with other employers on multi-employer worksites.

Many employers also document their processes for introducing new chemicals, requesting SDSs, and replacing outdated sheets, and cross-reference spill response and first-aid procedures. These are good practice rather than required written-program elements.

Common OSHA citations involve missing or outdated SDSs, unlabeled containers, incomplete inventories, or generic training that fails to address workplace-specific hazards. Periodic audits, standardized labels, and role-based training help maintain compliance and employee safety.

National Safety Compliance offers Hazard Communication training programs to help businesses meet the training portion of the standard.

The 2024 Hazard Communication Update and Compliance Dates

OSHA published an updated Hazard Communication Standard on May 20, 2024, effective July 19, 2024, aligning the rule more closely with a later revision of the GHS. The update revises hazard classification criteria, adds provisions for labeling small containers, clarifies labeling of chemicals released for shipment, and updates SDS content and trade secret provisions.

On January 15, 2026, OSHA extended the compliance dates by four months:

• Substances: manufacturers, importers, and distributors by May 19, 2026; employers (updating labels, the written program, and training as needed) by November 20, 2026.
• Mixtures: manufacturers, importers, and distributors by November 19, 2027; employers by May 19, 2028.

Until those dates, employers may comply with either the 2012 standard or the 2024 standard. Employers should watch for updated labels and SDSs from suppliers and update their workplace labels, written program, and training when new hazard information arrives.

Understanding the Employee Right to Know

OSHA Hazard Communication upholds the employee right to know and understand the chemical hazards they may encounter. Under 29 CFR 1910.1200, employers must establish a consistent system for hazard identification, communication, and control aligned with GHS principles.

Key compliance elements include:

• Written program: Describe how labeling, SDS access, and training are handled, list the hazardous chemicals present, and explain how hazards of non-routine tasks and contractor work are communicated.
• Chemical inventory: Maintain a current list of hazardous chemicals, using product identifiers that match the SDS.
• Labeling: Ensure shipped containers display GHS-aligned labels with product identifiers, signal words, hazard and precautionary statements, pictograms, and supplier details. Label secondary containers as well, unless they are portable containers intended only for immediate use by the person who filled them.
• SDS management: Keep a 16-section SDS for each hazardous chemical readily accessible on every shift, whether on paper or electronically. Electronic access must have no barriers, and a backup should be available during power or network outages.
• Training: Conduct chemical safety training at initial assignment and whenever a new chemical hazard is introduced, in language employees understand.

For example:

• Decanting solvent into spray bottles requires hazard labeling consistent with the SDS.
• Employers and contractors must exchange SDS and label information on multi-employer sites.
• Specific chemical identities can be withheld as trade secrets, but the hazard information and protective measures must still be disclosed.

Routine inventory checks, accurate SDS alignment, and timely updates turn the employee right to know into an effective defense against chemical hazards and OSHA citations.

For a training-focused look at the same standard, see our guide to Hazard Communication Right to Know training. For a plain overview of what the standard gives workers, see Right-to-Know: Hazard Communication Standard.

Be sure to check out How to Navigate Federal OSHA and Cal/OSHA Compliance Strategies for Business Safety Managers for additional help. For full context on how Hazard Communication regulations fit within multi-industry compliance, refer to our Comprehensive Guide to Combined OSHA 1910 and 1926 Regulations for Multi-Industry Workplace Safety Compliance.

Core Elements of a HazCom Program

A successful HazCom program is dynamic, building OSHA and GHS requirements into daily operations. Each element should be clearly defined, consistently applied, and reviewed periodically for effectiveness.

• Written program: Define responsibilities, SDS and labeling procedures, and training. Include program checkpoints and administrator contact details.
• Chemical inventory: Maintain a current list matched to current SDSs, covering all production and maintenance chemicals.
• Labeling: Keep manufacturer labels intact and ensure secondary containers display consistent hazard information.
• SDS management: Keep the latest 16-section sheets, with backups for network interruptions if access is electronic. Replace superseded versions promptly.
• Training: Deliver training in a language and at a literacy level employees understand, explaining label elements, SDS use, protective measures, and emergency procedures.
• Non-routine tasks: Plan and communicate hazards before performing uncommon tasks.
• Contractor coordination: Exchange SDSs and hazard information before work starts.
• PPE and controls: Match each hazard to appropriate engineering controls and protective equipment.
• Verification: Conduct regular audits and correct problems promptly.

Physical resources make program upkeep easier. National Safety Compliance offers an SDS Binder printed with the GHS pictograms and SDS requirements, a Budget Right-to-Know Center with a wall-mounted wire rack, the GHS Pictograms Safety Poster and OSHA GHS Quick Reference Chart, and Hazard Communications Training Booklets.

Safety Data Sheets: The Core of Compliance

Safety Data Sheets (SDS) are the central communication tool in OSHA Hazard Communication. Every hazardous chemical must have a readily accessible, current SDS. SDSs can be kept on paper or electronically, as long as employees can access them without barriers during each shift.

Each SDS must follow the 16-section format. Sections 12 through 15 (ecological, disposal, transport, and regulatory information) must be included, but OSHA does not enforce their content because those topics fall under other agencies. Workers should pay special attention to Sections 2 (Hazards), 4 (First Aid), 7 (Handling and Storage), 8 (Exposure Controls/PPE), and 10 (Stability and Reactivity).

Compliance best practices:

• Link each chemical to its SDS and primary work area.
• Assign staff to verify and replace SDSs when suppliers send updates.
• Under 29 CFR 1910.1020, SDSs are treated as employee exposure records. Keep either the SDS or a record of the chemical's identity, where it was used, and when it was used, for 30 years.
• Ensure all employees, including temporary workers, can access SDSs without delay.
• Review your SDS collection periodically and whenever new products are introduced.

Build SDS navigation into chemical safety training. Short drills or quizzes strengthen retention and reinforce safe practices.

Proper Labeling and Hazard Warnings

Labels are the first line of defense in hazard communication. OSHA requires standardized GHS label elements so chemicals can be identified and understood at a glance.

Each shipped container label must include:

• Product identifier (matching the SDS)
• Signal word: "Danger" or "Warning"
• Hazard statement(s)
• Appropriate pictogram(s)
• Precautionary statements (prevention, response, storage, disposal)
• Name, address, and telephone number of the manufacturer, importer, or other responsible party

Employers are responsible for workplace (secondary) container labels. These can repeat the shipped label information, or show the product identifier plus words, pictures, or symbols that, together with other information immediately available to employees, convey the specific hazards. Rating systems such as NFPA or HMIS can be used if they are consistent with the standard and employees have immediate access to the full hazard information. Portable containers intended only for immediate use by the employee who filled them do not require labels.

Keep labels consistent with SDS Section 2, update them when new hazard information is received, and train employees on all label elements and pictogram meanings.

Effective Employee Training Requirements

Under 29 CFR 1910.1200(h), employers must provide effective information and training on the hazardous chemicals in employees' work areas. Training must occur at the time of initial assignment and whenever a new chemical hazard is introduced.

Training must cover:

• The requirements of the Hazard Communication Standard
• Operations in the work area where hazardous chemicals are present
• The location and availability of the written HazCom program, the list of hazardous chemicals, and SDSs
• Methods and observations used to detect the presence or release of a hazardous chemical
• The physical, health, simple asphyxiation, combustible dust, and pyrophoric gas hazards, and hazards not otherwise classified, of chemicals in the work area
• Measures employees can take to protect themselves, including work practices, emergency procedures, and PPE
• Details of the employer's HazCom program, including the labeling system, how to read labels and SDSs, and how to obtain and use hazard information

The Hazard Communication Standard does not require training records, but documenting each session's date, content, attendees, and trainer is good practice and helps show compliance during an inspection. Periodic refreshers reinforce retention.

Employer Compliance Responsibilities

Employers must maintain a written program that reflects their own operations. It should include the chemical inventory, labeling methods, SDS accessibility, training, and communication procedures for contractors and non-routine tasks.

Labels must meet GHS requirements, and SDSs must be readily accessible on every shift. Outdated SDSs should be replaced promptly, and exposure records, including SDSs or chemical identity records, maintained for 30 years under 1910.1020.

Proactive communication, periodic internal audits, and consistent documentation help demonstrate compliance during OSHA inspections.

Benefits of a Strong Hazard Communication Program

A robust HazCom program reduces incidents, improves workplace chemical safety, and supports regulatory readiness. Benefits include:

• Reduced injuries and exposures
• Consistent PPE and storage standards
• Improved chemical substitution and reduced environmental risk
• Smoother audits and lower compliance costs
• Stronger employee confidence and participation

Maintaining Long-Term Compliance

Sustaining OSHA Hazard Communication compliance requires continuous attention: clear ownership, inspections, updates, and employee involvement. Use audit checklists to verify that every element is current and effective, so your program stays accurate, accessible, and compliant year-round.

Related: HazCom and chemical safety training