I really love the idea of this game, even though I am not a big zombie game guy. I would love to see more of this when it's done, great job!
Here's a few of my playthroughs, really highlighting the use of stationary supplies as weapons, including the jam from the co-worker who is always eating toast:
I did have issues with the walls and the co-workers locking you in place, other than that, awesome concept and great music! :)