I found a lot of the comments here interesting. One thing that I've heard debated after the Utah mall shooting in a "gun free zone" was the property owner's liability for lack of security. If the employer wished to deny a gun owner the right to carry on the employer's property, the employer would then be responisble for the employee's well being. That well being would have to extend past the employer's property to the commute to and from work. When approached from this viewpoint, few employers would be willing to take up that much responsibility and the car gun ban would seem a lot less of an option. The private property argument has two edges: Yes, you have the right to do as you wish (with the above exceptions duely noted) with and on your property, however you have the liabiity also.