EE WAS MOVING BATTERIES ALONG A SHELF. HE HAD DONE EVERYTHING HE COULD TO MAKE THE JOB EASIER, BUT AT SOME POINT HE STRAINED HIMSELF TOO HARD. THE INCIDENT WAS NOT REPORTED TO HIS SUPERVISOR U NTIL 3-10-2000& EE DID NOT WANT MEDICAL ATTENTION UNTIL 3-13-2000.