It's perfectly legal that Publics maintain a "no hire list". Sue all you want. You will get nothing. When are you guys going to realize that you are all basically Publicis Slaves. I was in contract sales for 1 year, and got on with another major pharma. Now I have a GAS CARD AND A COMPANY CAR! I now realize how lucky I am NOT working contract anymore!! I bust my ass much harder than I did for Publicis, or even the company I got laid off from before Publicis. I damn near ruined my personal car in a huge territory.
If they contracting company would just realize that they would have far more loyal full time employees, as opposed to contract employees, they would never hire a CSO company!
In re the list, yes it really does exist. Ask your recruiter, and they just might tell you if you have a good relationship with them.