If there was a mole in the MEC, how is a confidentiality agreement going to stop it? An agreement between the union and the company does not stop a union officer from talking to the company (especially surreptitiously). It stops a union officer from talking to the pilot group or other outside parties that are not a need-to-know concern. Conversely, a confidentiality agreement limiting what a union officer can say to the pilot group is, first, redundant, and second useless. It does not stop him from speaking SECRETLY. Finally, a confidentiality agreement limiting what MEC officers can speak to the company is, once again, useless if it is happening surreptitiously.