• Include how on-site access to safety data sheets will be provided if there is more than one employer operating on a site.
• Include how employers will be informed of precautionary measures and on-site labeling system differences.

Multi-employer worksites

Where there is more than one employer operating on a site, and employees may be exposed to the chemicals used by each employer, the employer’s written hazard communication program must address:

• How on-site access to safety data sheets (SDSs) will be provided to the other employer(s).
• How such employers will be informed of needed precautionary measures.
• How such employers will be informed of the on-site labeling system if it is different from the labels specified for shipped containers under the standard.

Employers in multi-employer worksites who do not use hazardous chemicals, but whose employees are exposed to the chemicals used by other employers, are required to have a program and train their employees on the hazards of the chemicals in the work areas.

Need for periodic review

Because the hazard communication program must remain up to date, it will be necessary to periodically evaluate and reassess it. The information in the written program must be accurate.

Review and revise the program as appropriate to address changing conditions in the workplace, such as the addition of new chemicals, updated hazards from chemicals currently used, changes in processes that affect exposures, required changes to personal protective equipment (PPE) or training, and so on.