ON FEB 25, EMPLOYEE WAS HELPING PUT 48"" TOP STRUCTURE ON RAILS. AS HE PULLED TO PULL THE CHIVE ROPE OVER THE STRUCTURE HE FELT PAIN IN HIS LOWERBACK. DURING CHECKUP DOCTOR FOUND A HERNIA IN RI GHT GROIN AREA. HE WAORKED HIS NEXT SCHEDULED SHIFT AND EVERY DAY. THE HERNIA CONTINUED TO GET WORSE FROM REPEATED LIFTING.