Is Walmart responsible for my medical bills for an injury I received at one of their stores? An employee yielding a box cutter was slashing at another customer who was pushing her, during a black Friday sale. After lacerating the man she hit me with the box cutter on my backside leaving a deep 3 inch long laceration that required treatment by EMS and a tetanus shot a day later. Now I have to have lab work done to check for blood born illness'. Claim was filled out at Walmart and they called the ambulance to have wound checked out because it wouldn't stop bleeding, but are they responsible?