I think it’s already a done deal if the employee is threatening to leave.
Up until that point, there’s usually:
- self assesment from the employee to explain their perf
- response from the employer about what they agree with and what they don’t like, and what is needed for them to give a raise.
- eventual employee appeal of the decision
- response to the appeal
At that point, if the employee pulls the “I could go somewhere else card”, or the employer was trying to screw the employee, and giving a raise will still leave a bad taste in the mouth of everyone; or the employer can’t do anything and the employee has no choice but to actualy leave.
That’s also why I think trying to keep someone who puts down a demission is useless, except if the company has a drastic change coming up that solves the employee’s complaints.