Empoyee parked haul truck inproperly causing ladder to be higher from ground. EE got off haul truck he felt a pull in his shoulder. He did not feel anything was wrong and did not want to see a dr. He went to dr. 12/12/06 for unrated reason & told dr about shoulder. X-rayed found nothing wrong. still bother him return to dr. if to going for surgery. 4/18/07 he went for medical