Where did your fascination with the roaches occur? They make people cringe, and I felt that sensation of something crawling on me just within the first paragraph. Do you remember a particular moment or stimulus that stands out with your apocalyptic friendlies?
Reminds me of "The Company", Check it out if you haven't read it. This could really work. For some reason, I see this woman getting back at her supervisor for all his sexual advances in the last quarter, it has to take place in a copy room, but is this what her supervisor is into? Well that is up to you. Have fun with it.