What? There's no reason for the employee to correct it. Via a quirk in the system an employee ends up making more money than they're worth. Manager notices it

What? There's no reason for the employee to correct it. Via a quirk in the system an employee ends up making more money than they're worth. Manager notices it too late and decides to correct the problem by firing them, aka "conversation about a future elsewhere". The word picture that ChuckMcM painted wasn't that difficult to grasp.