[agiamas]

it is possible, but most of the times it's not anonymous. I.e. after an anonymous survey for some ridiculous "company of the year" award (by a third party mind you..) it was identified that some women didn't vote the place as meritocratic or equal opportunities. They were dragged into a meeting room to "discuss" about their views. This served as a lesson to all these women and all of their colleagues to never trust "anonymous surveys" in the workplace, ever.