My son's car has been vandalized twice ($3200 worth) at work.Is his employer liable for the damages?

A business that owns a parking lot has business insurance that, in part, insures for "premises liability." As grocery store businesses are held liable for parking lot signs falling on automobiles or loose grocery carts allowed to run into cars, then the "premises liability" clause of the stores business insurance policy should be looked at. One would hope that if you or Kyle or someone in his behalf asked the busines to file a claim under their policy that they would. Otherwise, a business that asks their employees to come onto their property and provides them with a parking lot should be held liable for not making it reasonably safe for the employee or the employee's property.