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663 HAZWOPER for General Site Workers IV
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Other Important Labeling Requirements

Labels are useless unless they accurately communicate the hazards of their associated chemicals. It's important to keep labels in good condition always. The employer must not remove or deface existing labels on incoming containers of hazardous chemicals, unless the container is immediately marked with the required information.

The employer must ensure that labels or other forms of warning are:

  • legible, in English,
  • prominently displayed on the container, or
  • readily available in the work area throughout each work shift

Employers having employees who speak other languages may add the information in their language to the material presented, if the information is presented in English as well.

Updating Labels

Chemical manufacturers, importers, distributors, or employers who become newly aware of any significant information regarding the hazards of a chemical must revise the labels for the chemical within six months of becoming aware of the new information, and must ensure that labels on containers of hazardous chemicals shipped after that time contain the new information.

If the chemical is not currently produced or imported, the chemical manufacturer, importer, distributor, or employer must add the information to the label before the chemical is shipped or introduced into the workplace again.

Knowledge Check Choose the best answer for the question.

4-8. Employers must ensure that labels or other forms of warning are _____.