Periodic reviews are the best way to make sure that chemical inventories are still accurate, the people responsible for coordinating elements of the hazard communication program are still performing needed duties and training continues to addresses chemical hazards appropriately.
Two weeks ago, I went to a presentation by Kelly McBride on the topic of ethics and the media. Kelly is the ethicist with the Poynter Institute in St. Petersburg FL. She also contributes to an NPR broadcast.