Not that I think firing 5% makes any sense but unions are a far worse evil, had to walk past almost 20 people in a tiny train station pretending to be ticket inspectors when the gate for ticket checks is automated and within view of them all so it's a completely fake job but they can't fire them so they have them do this "job" till they retire on a excellent pension which to make matters worse along with their salary are negotiated via the threat of striking crippling the capitals transport network.

If 5% is every coworker is a competitor, unions are your coworker doesn't even have to deliver any value at all yet is treated the same as you.