EMPLOYEE WAS IN THE PROCESS OF GETTING UP ON A KOMATSU EXCAVATOR. HE GRABBED THE HAND HOLD WITH HIS RIGHT HAND AND SLIPPED WHILE TRYING TO PULL HIMSELF UP, JERKING HIS RIGHT SHOULDER IN THE PR OCESS. HE NOTIFIED HIS SUPERVISOR ON 4-21-03 AND CONTINUED WORKING UNTIL HE WENT TO THE DOCTOR ON 4-30-03 AND WAS INSTRUCTED NOT TO RETURN TO WORK. HE NOTIFIED US ON 5-1-03.