EE WAS ATTEMPTING TO CONNECT LOCOMOTIVE TO WATER CAR. EE DID NOT POSITION ENTIRE BODY IN THE OPERATORS COMPARTMENT, KNEELING IN THE COMPARTMENT LEAVING FEET EXPOSED. EE TRAMMED THE LOCO FORWARD AND LEFT FOOT WAS PINCHED BETWEEN THE LOCO AND RAILS STACKED ALONG RIB. CAUSE: INPROPER BODY POSITIONING