Several things come into play here. The physician is doing what he/she can to manage patient health and safety. When assessing patient health, mental status, ordering of labs, and other diagnostic tests, oftentimes information relayed to the patient is missed. Simultaneously, the injured worker has so many competing thoughts about the injury, potentially missing work, paying bills, obtaining medical coverage for the accident, etc., that he may not have the capacity to absorb the information being shared by the prescriber.