Engineers who don’t perform well for extended periods of time tend to drain resources from the rest of the team. They require active management; laborious code

Engineers who don’t perform well for extended periods of time tend to drain resources from the rest of the team. They require active management; laborious code reviews, they also introduce more bugs and contribute to less robust designs. As for firing, it is a painful process for a manager as it comes with a variety of liabilities and HR involvement.