Gasp! Your group's getting consolidated, re-org'ed or screwed.

How to deal.

Keep yourself proactively searching for another opportunity if your current situation looks dire. I heard a new term (to me anyway) call passive job hunting. Simply put, keep your feelers out there, talk to headhunters or internal HR about what the market looks like, and tell them to contact you if they feel you're a fit for a hot job.

Stay put! yea that goes against what I just said above, but sometimes the change in your group is better than the previous version of it. If you are in fact a producer, and known for it, usually the new group wants to keep the cherry candidates and discard the dead wood.

Just chuck it and resign. But do so in a professional manner, give them the opportunity to keep you for three weeks so the transition is smooth. Most people who burn bridges come back to those charred remains later in their career. You may think your industry is big, but a bad reputation or black mark is bigger. So, be a pro, and people will remember you that way.