what gun advocating business owners do you know allow their employees to carry at work if they legally can? Gun shops not included. I personally know of none.
I worked for a small Wrecker and Tow service (5 trucks) for about 4 1/2 years. Legal concealed carry was allowed and even encouraged, but it was not required.
There is a local Air Boat Tour company, near where I live and I see the boat operators packing openly, occasionally. Not sure if it is required, or not, by the company.