Final answer:
The correct action when new hazards information is available is to update workplace labels immediately, in compliance with OSHA regulations to maintain a safe working environment.
Step-by-step explanation:
When significant new information concerning product hazards becomes available, the appropriate action to take is to update the workplace labels immediately. This ensures that all workers are aware of the hazards and can take the necessary precautions to stay safe. This is because employers have the responsibility to provide a safe workplace and must inform workers about chemical hazards through labels and other methods. Updating labels immediately ensures that workers are aware of any new hazards and can take appropriate precautions. Employers have a responsibility under OSHA to inform workers about chemical hazards through various methods including training and labels. Updating labels in a timely manner is part of ensuring the workplace does not have serious hazards and adhering to safety and health standards.