The right to bring a gun onto a company parking lot is gaining momentum nationwide, to the chagrin of employers who feel caught in the crossfire. In recent years, a growing number of states have passed laws that give employees the right to bring guns onto company parking lots.

Oklahoma started the trend in 2004. Since then, 10 other states have followed suit, including Florida, Georgia, Kansas, Alaska, Minnesota and Nebraska. And more than a dozen others are currently considering similar legislation, including California, Texas, Virginia and Arizona.