is this a company that fires its employees if they are armed as they make deliveries?
Just about every corporation does. Until states pass laws (that pass constitutional muster) applying the Castle doctrine to corporate employees acting in their capacity as agents for their employers, corporations will continue firing armed employees. Large corporations make a very attractive target for ambulance chasers suing them on behalf of the families of the dead perps. An alternative would be to require corporations to pay large sums of money to the families of employees killed while on official business.