To the original poster-
Likely yes, the low PR is just a step towards the justification required to let you go in the next round.
Is it a guarantee? No, a fees from my group that had low reviews stayed, but are presently living under hellish conditions, had to train others in their job and have been stripped of duties, so the clock is ticking.
While not legal, if you have some years, advanced degrees, higher range for your salary, you are already on the radar.
That said, I was let go in October. Found work again, in pharma and have a VASTLY reduced stress level. Far more pleasant working conditions, and far less drama. And yes, it is at 14% less. And that sucks, but comparing life at Merck to life after, it is worth it.
As before someone talks about eating stress of lunch- I was in SF in the military- a hard day and stress are nothing. Mindless BS, for a management tea that doesn't care or have a clue, deadlines just to create work and a culture of secrecy and demeaning others is something to wear you down.
I do not doubt some are happy at Merck. They have to be. But I can say in a research division, nearly everyone, LSP and LM were miserable.
I would truly like to see someone truly happy with the current direction, pipeline, and workforce practices say they are happy there. If so, they must be a SLT with a golden parachute.