Abstract: On September 5, 2001, Employee #1, a temporary seasonal worker, suffered a head injury while working at a fairground. Employee #1 was using a post-pounder to set metal fence posts; he raised the post-pounder and then released it to strike the top of the metal fence post. The tool, for an unknown reason, became unbalanced causing it to tip over and strike the Employee #1 on the top of the head. The post-pounder was examined and found to be in good condition, it is unknown why the tool became unbalanced. Employee #1 was initially treated, as an outpatient, for a scalp laceration and concussion. However, sixteen months later Employee #1 was hospitalized for spinal surgery.