ASSOCIATE WAS HELPING ANOTHER REMOVE A SCREEN BEARING FROM BED OF PICK UP TRUCK & PLACE ON G ROUND. WHEN HE FELT SHARP BURNING IN LOWER ABDOMEN INFORMED SUPERVISOR WITH 20 MINS. SUPERVISOR ADVISED HIM TO SEE DR. ASSOCIATE STATED HAD TRIPPLANNED FOR NEXT WEEK SOULD SEE DR UPON RETURN IF STILL IN PAIN RET'D 4/23/01 & PROCEEDED TO SEE DR WHO CONFIRMED HERNIA