Get thy butt down to employee relations, ask for your file (you'll need to give them probably 48 hours notice and they won't sound too pleased) and PHOTOCOPY EVERYTHING, even copies of, for instance, your nursing license. And don't let them tell you
that you can't. I was involved in a retaliatory firing back in '82 (yup, I"m old and ancient) and this is what my union told me to do. Also, I hope that you've kept copies of your evaluations plus any "aren't you wonderful" letters that you might have received.
Don't tell emp rel that you're planning to photocopy ahead of time, either. Once you've photocopied everything, and I mean everything, in your file, nothing negative can be slipped in without your knowledge and your employer can't claim that you knew about the negative items.
Everybody's right. Kiss off this job and start applying elsewhere BEFORE any job action can occur. And document any retaliatory threats as well, have your lawyer introduce it into court's evidence when you go to support your co-worker.
Good luck. I was out of work for almost 2 years, although I took an OR course for the last 7 months and went on to get a job in that field.
I'd been an NNICU (tertiary, transport team, nurse clinician) nurse for almost 18 years and suddenly found that I was "not qualified" to work in a 5 bed secondary NNICU. Even though on every job application that I filled out, I wrote "please contact BCNU (my union) for further information", each personnel office ignored that and contacted my former employer. And given the opportunity, BC Childrens Hospital viciously blackballed me. They also claimed that I had "lost" my nursing licensure. I sued for "wrongful dismissal" and was awarded all of my backpay, raises, etc. to the tune of $16,000.
At first, I was numb with shock. Newly single, and with 2 kids to boot. But looking back at that time, it was the best thing that could have happened to me. I got to take time to do things with the kids (band mom, paper drives, etc) that I would have missed otherwise. And I discovered that the sum total of my worth was not just my career "label".
I went on to take a job working in a specialty that I enjoyed, and I've been there for 18 years.