Yeah I don't see why that's necessary. I'm sure you can always reach out to HR and ask (I have facilitated this in the past, pulling contact lists and phone numbers) but that also gives them ways to exfiltrate data. It's company data. Just think of all the info you have in your inbox. Unless you've managed offboarding for high level IT positions it seems harsh, but the risk is just too high to allow the user to do that stuff themselves.