<prompt> Human: I am a full time employee of a company. I was paid 1000 as a bonus 6 months ago. Today my employer requested I fill out a W9 to account for the bonus. Is that a normal practice? It seemed odd to me.Update: Thanks a whole heap for all the information. It really helped a lot. I think it is what you suggested, that they are just trying to avoid the taxes. Ill talk with them, but Im not going to fill it out. I just dont feel comfortable doing it if Im a full time employee.  <response>: It sounds like someone in HR could potentially be trying to cover up their tracks because they forgot to take taxes out of it when it was disbursed to you.Do you remember or have a paystub where this may have shown up at the time in your regular paycheck? You will want to check that first if you can, or go to HR and confront them about it. Play dumb. 