Really? Does it even help if you don't know who it is? Do they expect each person to look for another job and have it lined up on hold just in case he is one of the 20% that actually get fired?

usually in those jurisdictions, they insta-layoff, but keep them on payroll covering the "advanced notice".

This gives the impacted people plenty of notice and time to look for new opportunities.

Now they have 80% of the company trying to leave.