When Dominoes Pizza had their food scandal (staff spitting in food) they acted upon it immediately and did pretty well to limit the damage on their brand. They responded honestly, acted swiftly and strongly in order to solve the problem and move on from it quickly.
Other corporate companies try to cover it up. A United Airlines baggage handler tossed a guitar onto the plane and broke it. UA decided not to reimburse the owner in which case he fought with them for a year trying to get his problem resolved.