Companies that have good principles and act on them do not need to fire people for speaking up. If they speak up and are right, you thank them and correct the

Companies that have good principles and act on them do not need to fire people for speaking up. If they speak up and are right, you thank them and correct the problem. If they speak up and are not right, you provide proofs or ignore it altogether if it is going to be obvious. The only reason to fire is if you know they are right but you have no intention to correct it. Scaring your employees into silence is going to be difficult to defend.