I just got word that when layoff notices in my district go out, they'll go back 4 years. I wasn't hired until September 4th, 2001.
The knowledge that I'll be near the top of the rehire list isn't comforting. I was laid off in this district 2 years ago, spent the summer on unemployment, and got rehired in August. Honestly, a lot of new gray hairs sprouted that summer. Now it looks like I'll have to do it all again.
Update: 3/14/05: I found out today they'll pinkslip everyone hired with the last five years, not four.