Question: Carolina Marble and Tile employed Jimmy Foster to do tile and brick work. He complained of headaches and ringing in his ears after working where jackhammers were in use. Foster and Carolina entered into a workers' compensation agreement, by which Carolina would pay Foster temporary total disability benefits for tinnitus (the perception of ringing, or other sounds when no external sound is present) and hearing loss. Two years later, Carolina tried to stop the benefits because state law provided there were to be no compensation awards for tinnitus. Could Carolina set aside its agreement to pay the benefits?