1. Quite a lot
2. Er...yes you could.
The redundancy application is confidential.
So you could therefore apply on someone else's behalf. Even if your victim found out in time, the first he would know about it would be when he got a confidential letter confirming receipt of his application! Unless you intercept his mail.
Maybe its already been done and someone is going to get a shock!
I thought of this many months ago, but it is a tadge beyond a jolly prank.