The Turkish Civil Aviation Union received the necessary authorization for the collective bargaining agreement.

Hava-İş, to which Turkish Airlines personnel are affiliated, received the necessary authorization for collective bargaining negotiations as a result of negotiations with THY management.
Hava-İş also thanked all ground personnel, cockpit and cabin crews for their support during the permit process.
 
https://www.airporthaber.com/havacilik-haberleri/havais-tis-icin-yetki-belgesini-aldi.html