This year, Tennessee joined 21 other states that allow employees to leave guns in their cars at the office parking lot. The laws have left many employers debating how best to ensure safety at work.
After Georgia passed its law allowing employees to keep firearms in their employers' parking lots, Sally Roberts installed a sign on her newspaper firm's door. It read: "No Weapons Allowed."
A job candidate once threatened her, says Roberts, human resources director at Morris Communications.