EMPLOYEE WAS FILLING 60 WT OIL BIN IN THE ALMP BAY, THE OIL OVER FILLED AND RAN ONTO THE FLOOR. EMPLOYEE PUT FLOOR DRY AROUND THE SPILL, AS THE EMPLOYEE WAS CLEANING UP HE STEPPED IN OIL AND SLIPPED TWISTING HIS BACK. LATER IN THE SHIFT EMPLOYEE FELT A MUSCLE SPASM IN HIS BACK. EE WAS SEEN BY A PHYSICIAN AND LATER BY A CHIROPRACTOR.