THE EMPLOYEE EXPERIENCED BACK PAIN DURING SHIFT WHILE OPERATING A MUCKER. HE REPORTED TO WORK ON THE NEXT SHIFT AND WENT HOME BECAUSE OF INCREASED PAIN. THE COMPANY WAITED FOR MEDICAL CONFIRMA TION OF OCCUPATIONAL ILLNESS OR INJURY BECAUSE HE HAD COMMENTED ON A SORE BACK PREVIOUSLY. ON 7/26 THE COMPANY RECEIVED THE DIAGNOSIS OF A LOW BACK SPRAIN.