It really sounds like you just did.

Paypal in the 2010s. San Jose Campus. On a bulletin board with some other mandated employee notifications. Never saw this at any other company.

I saw a similar notice on a random wall at the office of a late-stage startup I occasionally visited (since acquired) -- although it was in regular sized font. I actually informed one of my friends who was looking for a job to sponsor his visa about the position, and he was hired.