I have worked for an employer that prohibited firearms of any kind on their property for quite a few years. It was communicated via email, verbally and in print that a violation would result in termination.
I have taken a handgun course, been around firearms all my life and have had a handgun permit for quite a number of years with no incidents of any kind.
My family and I feel safer when we have our firearms with us. Guns do not kill people, people do. Your finger is not on the trigger unless you are going to fire your weapon when you are in danger or your family is in danger of being harmed by another individual.