I work at home.... so I fuck at work whenever I want.
Before I worked at home I worked in a new office building and we were the first tenants, I thought about fucking one of my co-workers up in the vacant offices upstairs all the time. Then after I quit I found out he had a crush on me the whole time too to think of all the times we could have had.
Working as a DJ in a few local area bars I have had sex with a couple of dancers and even had a blowjob contest during Labor Day Weekend. It was fun and I am sure one of the customers saw me fucking in the booth even though I tried to be very discreet. She however wasn't so discreet. None the less fantastic job to have sex with the co-workers. One club I fucked in the dancers room, just outside the dancers exit and got a blowjob in the booth and in the parking lot. I miss that job sometimes.
I got head in the bathroom at work, and the fucked an employee in our "cash room" where we count down our drawers. The only thing that sucked was that my drawer was about $100 short that night so I was worried that my boss would watch the video of the room to make sure that I hadn't stolen the money. Luckily he found the missing cash and never had to look at the video. That would have been pretty hard to explain.
Yeah, it was a close one. If they fired me they wouldn't have anyone else to put the "secret" ingredient into the chicken. Then those poor stoners at 3 am would be pretty upset.