Actually it'* company policy. All employees must park so far out, usually marked by a yellow line. If you watch at most Lowe'* the parking spaces are white except for one line all the way across the lot which is yellow. That technically marks where employees can park.
Its funny that you mention that about rules company wide. Back when I was at Lowes here, I would run ICB'* between 5 different stores in NY and PA. Each and every store seemed to have its own little set of modded "rules". Every store I went to, I never wore my vest. But the parking lot rule seems to be corporate wide, but modded at each store level.