Requirement guide · US federal
OSHA hazard communication training requirements
Who needs it, when, what it must cover, and what the 2024 update changes. Based on 29 CFR 1910.1200(h) and OSHA's own policy statements.
The short answer
- Who
- Employees who work with, or could be exposed to, hazardous chemicals in their work area
- When
- At initial assignment, and whenever a new chemical hazard they have not been trained about is introduced
- What
- Information under (h)(2) and four training topics under (h)(3)(i) to (iv)
- How
- Effective information and training, in a manner and language employees understand
- Records
- 1910.1200 does not set a specific training records requirement
Who needs the training
Paragraph (h)(1) of 29 CFR 1910.1200 requires employers to give employees "effective information and training on hazardous chemicals in their work area". In practice that means anyone who uses, handles or could be exposed to hazardous chemicals at work: cleaning and janitorial staff, warehouse and stockroom workers, lab and manufacturing staff, auto shops, salons and similar workplaces.
The standard also expects a written hazard communication program with a list of the hazardous chemicals in your workplace (paragraph (e)). That list and your safety data sheets (SDSs) show who needs which training.
When it must happen
Paragraph (h)(1) sets two triggers: at the time of initial assignment, and whenever a new chemical hazard the employees have not previously been trained about is introduced into their work area.
Training may be designed around categories of hazards (for example flammability or carcinogenicity) or around specific chemicals. So you do not need a new session for every new product. You need one when the product brings a hazard your people have not been trained on. Chemical-specific information must always be available through labels and SDSs.
The text of 1910.1200 does not set a fixed annual refresher. Many employers run a yearly refresher anyway as good practice, but that is a choice, not a rule in this paragraph.
What employees must be told
Paragraph (h)(2) says employees must be informed of:
- The requirements of the hazard communication standard
- Any operations in their work area where hazardous chemicals are present
- The location and availability of the written hazard communication program, including the required list of hazardous chemicals and the safety data sheets
What the training must cover
Paragraph (h)(3) says training must include at least:
- Methods and observations used to detect the presence or release of a hazardous chemical, such as employer monitoring, continuous monitoring devices, or the visual appearance or odour of a chemical when it is released
- The physical, health, simple asphyxiation, combustible dust and pyrophoric gas hazards, and hazards not otherwise classified, of the chemicals in the work area
- How employees can protect themselves, including the employer's work practices, emergency procedures and personal protective equipment
- The details of your hazard communication program: how to read the labels on shipped containers, the workplace labelling system, and the SDS, including the order of information and how to get and use it
How it must be delivered
1910.1200 does not say whether training must be live or online. It requires training to be "effective". OSHA's Training Standards Policy Statement of 28 April 2010 says training required by OSHA standards must be presented in a manner employees can understand, using a language and vocabulary they understand. If an employee cannot read, telling them to read training materials does not meet the obligation.
So an online course can be part of a HazCom program, but you should make sure it is in the languages your workforce uses and that people can ask questions and reach the written program, chemical list and SDSs for their own work area. Training that stays generic does not cover (h)(2) and (h)(3)(iv), which are specific to your workplace.
The 2024 update and its dates
OSHA revised the standard in a final rule published on 20 May 2024 (89 FR 44144), aligning it with later revisions of the GHS. Paragraph (j) sets staged dates. Employers must, as necessary, update alternative workplace labelling, the hazard communication program and employee training for newly identified hazards by 20 November 2026 for substances and 19 May 2028 for mixtures. OSHA extended these dates by four months in a rule published in the Federal Register on 15 January 2026. Chemical manufacturers, importers and distributors had earlier dates (19 May 2026 for substances, 19 November 2027 for mixtures).
Until the applicable date, employers may follow either the current text or the version revised as of 1 July 2023, or both.
Who can deliver it
The standard does not name a required trainer qualification or certification. The training has to be effective and cover the content above, including your own program and labelling system, so the person delivering it needs to know your workplace.
What records to keep
Paragraph (h) does not set a specific training records requirement, and the text of 1910.1200 does not name one. Most employers still keep who was trained, on what and when, because it is the easiest way to show the training happened.