DRIVER CAME IN BACK DOOR OF SHOP AND SLIPPED BUT DID NOT FALL FLOOR WAS WET AND SNOW OUTSIDE OF SHOP DRIVER HAD RUBBER BOOTS ON, SOME OIL WITH FLOOR DRY WAS IN SHOP AREA WHERE THE SLIPPED HAPP ENED. DRIVER FELT LEG SNAP AS HE CAUGHT HIMSELF FROM FALLING, DRIVER REPORTED LEG WAS BROKEN AT SAME SPOT BEFORE.