Last Updated on December 9, 2025

The Occupational Safety and Health Administration’s (OSHA) Hazard Communication Standard (HazCom), found in 29 CFR 1910.1200, ensures that every worker has the “Right-to-Know” and “Right-to-Understand” chemical hazards they may encounter on the job. For employers, this means creating a system that clearly communicates chemical information, provides training before exposure, and keeps documentation for compliance.

Practical HazCom training and recordkeeping are essential not only for preventing chemical-related injuries, exposures, and emergency mishandling but also for showing compliance during OSHA inspections. However, many workplaces still fall short due to outdated SDS binders, missing labels, undocumented training, or inconsistencies in chemical inventories. A strong understanding of employer responsibilities under HazCom helps prevent these common issues and supports a safer, more compliant workplace. 

 

Key Employer Responsibilities Under HazCom 

To comply with HazCom, employers must establish a complete system for managing chemicals, educating workers, and documenting safety practices. OSHA expects employers to meet the following responsibilities: 

1. Classify Hazards for All Chemicals in the Workplace

Employers must identify and document the physical and health hazards of every chemical present in their facility. Even when manufacturers provide hazard classifications, employers must still ensure that the information aligns with how chemicals are used onsite—especially mixtures, diluted chemicals, or repackaged materials. 

2. Provide Hazard Information Before Exposure

No employee should ever handle, store, transfer, mix, or dispose of hazardous chemicals without first receiving training. Workers must fully understand the risks and safety precautions before exposure occurs. 

 

3. Maintain a Written Hazard Communication Program (HCP)

OSHA requires every workplace to maintain a written HazCom program outlining: 

• How chemical hazards are communicated 

• Methods of labeling containers 

• How workers can access SDSs 

• Responsibilities for maintaining chemical inventories 

• Training procedures and documentation methods 

This written program must be updated regularly and easily accessible to employees and OSHA officials. 

 

HazCom Training Requirements 

Training is the backbone of Hazard Communication. OSHA mandates that employers provide clear, comprehensive, and understandable chemical safety training to all employees who may be exposed to hazardous chemicals. 

Who Must Be Trained? 

Training is required for all employees with potential exposure, including: 

• Production and frontline workers 

• Maintenance and repair staff 

• Janitorial/cleaning teams 

• Laboratory personnel 

• Warehouse workers and forklift operators 

• Logistics and shipping teams 

• Contractors and temporary employees 

If a worker could be exposed to chemicals during routine tasks, emergencies, or equipment maintenance, they must be trained. 

 

When Must Training Be Provided? 

i) At the Time of Initial Assignment

Employees must be trained before they begin work involving hazardous chemicals.

 

ii) When a New Chemical Hazard Is Introduced

Training must be updated when:

• A new chemical is added 

• A new process using chemicals begins 

• A revised SDS identifies new hazards 

 

iii) When Refresher Training Is Needed

Employers must retrain workers whenever:

• Incidents or near-misses occur 

• New PPE or controls are introduced 

• Employees show a lack of understanding 

• Annual safety reviews indicate gaps 

Refresher training reinforces safety culture and reduces chemical-handling errors

 

Required Training Content 

HazCom training must cover: 

1. Chemical Hazards (Physical + Health)

Employees must understand hazards such as flammability, corrosivity, toxicity, carcinogenicity, respiratory irritation, sensitization, and explosion risks. 

 

2. How to Read GHS Labels

Training must explain: 

• Pictograms 

• Signal words (“Danger,” “Warning”) 

• Hazard statements 

• Precautionary statements 

This ensures employees can instantly recognize risks. 

 

3. How to Read and Interpret SDSs

Workers should learn to navigate all 16 SDS sections, especially: 

• Section 2: Hazard Identification 

• Section 4: First-Aid Measures 

• Section 8: Exposure Controls and PPE 

• Section 10: Stability and Reactivity 

Employees must also know where SDSs are stored and how to access them at any time. 

 

4. Safety Practices and Protective Measures

Training must include: 

• Proper handling and storage 

• PPE requirements 

• Ventilation needs 

• Safe mixing and transfer practices 

• Incompatibility awareness 

 

5. Emergency Response Instructions

Workers must understand what to do in the event of spills, leaks, fires, or exposures—including evacuation procedures and first-aid steps. 

 

6. Language & Comprehension Requirements

Training must be delivered in a language and format that workers understand. This may include English, Spanish, visual materials, hands-on demonstrations, or simplified instructions for workers with limited literacy. 

 

Safety Data Sheets (SDS) Responsibilities 

Employers must maintain accurate, complete, and accessible SDSs for every hazardous chemical. 

1. Maintain Up-To-Date SDSs

A current SDS must be kept for each chemical, with updated versions replacing outdated ones immediately. 

 

2. Ensure 24/7 Employee Access

SDSs must be: 

• Available across all shifts 

• Accessible without going through supervisors 

• Not locked in offices, inaccessible binders, or offline computers 

Digital SDS libraries or cloud-based systems improve reliability and audit readiness. 

 

3. SDS Sections 2 & 4 Training Relevance

These sections are critical during emergencies. Workers must know: 

• Immediate hazards (Section 2) 

• First-aid instructions (Section 4) 

This knowledge can prevent severe injuries and support faster emergency responses. 

 

Chemical Labeling and Employee Awareness 

Labels are the front-line communication tool for chemical hazards. 

1. Primary Container Labels

Original manufacturer containers must include: 

• Product identifier 

• Signal word 

• Hazard statements 

• Pictograms 

• Precautionary statements 

• Manufacturer information 

 

2. GHS Pictogram Education

Workers must understand each pictogram’s meaning, such as flammable, corrosive, health hazard, or respiratory sensitizer. 

 

3. Workplace/Secondary Container Labels

When chemicals are transferred into smaller containers: 

• Labels must be applied unless used immediately by one worker 

• Employers may use GHS labels, NFPA, HMIS, or customized systems 

• Workers must be trained on the labeling system used onsite 

 

Documentation Requirements 

Documentation is the proof OSHA expects during inspections. 

i) Training Records

Employers must document: 

• Employee names and job titles 

• Training dates 

• Topics covered 

• Trainer identity and qualifications 

• Assessment results (if applicable) 

 

ii) Chemical Inventory Tracking

Every hazardous chemical must be listed, updated, and tracked. Additions, removals, and substitutions must be documented. 

 

iii) Written HazCom Program Maintenance

The written program must document: 

• Training procedures and schedules 

• Labeling methods 

• SDS access rules 

• Responsibilities for updates and reviews 

 

Periodic Reviews & Continuous Compliance 

Because chemical operations evolve, HazCom compliance is not a one-time task. 

1. Regular Review of Documentation

Employers should periodically review: 

• Chemical inventory 

• SDS library 

• Training effectiveness 

• Labeling system consistency 

• HazCom program accuracy 

 

2. Re-Training After Major Changes

New chemicals, processes, equipment, or OSHA updates require retraining. 

 

3. Use of Digital Tools

Technology makes continuous compliance easier: 

• Digital SDS management systems 

• Training LMS platforms 

• QR-code labeling for instant SDS access 

• Automated reminders for annual refresher training 

 

Hazard Communication for Non-Employee Personnel 

HazCom responsibilities extend to all onsite personnel. 

1. Contractors & Temporary Workers

They must be informed about: 

• Chemical hazards present 

• Labeling system used onsite 

• Emergency response procedures

 

2. Multi-Employer Worksites

All employers who share a worksite are required to exchange SDSs and communicate relevant hazards to each other to maintain compliance. 

Best Practices to Stay Fully Compliant 

To maintain strong compliance year-round, employers can adopt the following best practices: 

• Use digital SDS management systems for accuracy and instant access. 

• Implement role-based training schedules based on job exposure. 

• Conduct monthly or quarterly HazCom drills. 

• Use quizzes, toolbox talks, and feedback sessions to ensure worker understanding. 

• Audit chemical inventories and SDS libraries frequently. 

• Integrate an LMS with SDS software to track every requirement in one place. 

 

Best Practices to Stay Fully Compliant 

To maintain strong compliance year-round, employers can adopt the following best practices: 

• Use digital SDS management systems for accuracy and instant access. 

• Implement role-based training schedules based on job exposure. 

• Conduct monthly or quarterly HazCom drills. 

• Use quizzes, toolbox talks, and feedback sessions to ensure worker understanding. 

• Audit chemical inventories and SDS libraries frequently. 

• Integrate an LMS with SDS software to track every requirement in one place. 

 

Conclusion 

Maintaining OSHA HazCom compliance is crucial for protecting employees from chemical-related risks and preventing incidents that can threaten safety and operations. When employers focus on clear, consistent training and thorough documentation, they create a safe, informed, and fully compliant workplace. The results speak for themselves: fewer accidents, quicker and more effective emergency responses, smoother OSHA audits, and a stronger safety-first culture that supports every worker on the floor.