HR where I work is excessively paranoid about terminations. They will want a paper trail of performance failures or argue to death that “then they’ll be able to argue they were really fired for a protected reason. Get me a paper trail of performance failures”.
Not saying our HR is worker-friendly. They’re just VERY lawsuit-averse.
Flip-side, I worked at a company that fired anyone for any reason and just kept cash aside for wrongful termination suits. And they had a HUGE HR team, whose job it was to keep the employers happy.