Difficult, but possible: There needs to be investigation in order to gather necessary evidence, such as witness statements, surviellance videos, cell-phone recordings. You need to file a notice of claim. Also, you need to know that the general rule is that an employer is not liable for the intentional torts of its employee, so your lawyer will have to work out a legal theory of getting around that. Do not think for a moment that you can do this without a lawyer, this is not a simple matter.
Answered on Jul 18th, 2013 at 2:54 AM