Who must comply with all modified provisions of the Hazard Communication Standard?

The correct answer includes manufacturers, importers, distributors, and employers because the Hazard Communication Standard (HCS) outlines specific responsibilities for each of these groups in ensuring the safety of hazardous materials in the workplace.

Manufacturers of hazardous chemicals are required to evaluate the hazards of the chemicals they produce, label them appropriately, and provide safety data sheets (SDS) for their products. Importers have similar responsibilities, as they must ensure that the chemicals they bring into the country are compliant with the HCS guidelines, including proper labeling and access to SDS. Distributors are responsible for ensuring that the products they handle are appropriately labeled and that they supply the necessary safety information to their customers.

Employers are required to inform and train their employees about the hazards associated with the chemicals they may encounter in their work environment. This includes providing access to SDS, training on safe handling practices, and understanding labeling systems.

By including all these groups under the provisions, the HCS aims to create a comprehensive approach to hazard communication that ensures everyone involved in the supply chain, from production to distribution to the workplace, is aware of chemical hazards and knows how to protect themselves and others.