This reminds me of 'Trapped!'

Oddly enough, through the whole time that the guy was stuck in his office because he didn't have a key card to operate the door, I was thinking of an obscure 1973 TV movie called "Trapped!" with James Brolin. It's about a guy who is mugged in a department store men's room, becomes unconscious, and does not wake up until the store has closed. Everyone is gone, the store is locked up, and he has to escape several very mean Dobermans who patrol the store at night and smell fresh meat. Check out this clip...

http://www.youtube.com/watch?v=z5d_ISQePJ8