A female employee who appears to be smoking hot, but out of the workplace you wouldn't normally give her a second look.
Phil: I went for a few drinks in the city this weekend and saw Betty in a bar
John: man she is so fit, I would love to fuck her
Phil: Nah she's just Office Candy. She looked minging when i saw her the other day.
Phil: I saw that fit girl from work out last night, but she looked rotton!
John: Yeah, shes just 'Office Candy'!