[apocalyptic0n3]

You don't. But you're also not purposefully doing something that is going induce undue stress and potentially upset or anger the employee. You don't know how anyone is going to react to being told they've been let go. That's not an easy thing to be told and I have seen people get violent afterward.

As an example, about a decade ago, we let go an underperforming employee. His reaction was to walk out of the room before the conversation had finished, take a trash can and dump it onto his desk and computer, then go outside and into his car, pull a gun out of his trunk and start walking around the building rambling like a mad man. We had to go on lockdown and wait for a police response. Prior to that moment, he had never shown a single indication he would react like that and was trustworthy, he just wasn't performing well. If he had been someone with elevated privileges anywhere, he could have instead reacted by going back home or even into his car, accessed systems, and done damage that way.

I get what you're saying, but you're discounting how big a deal it is to lose your job and the things it can do to you mentally. Some people come out the other side of that a completely different person for a while.