Thanks for the reply and I did read the tread that's why I'm posting on this one, but it still doesn't answer my question which was "Who does article 53 apply to?" I understand the progression is 4 years. No question about that. It was explained to me that if you are in progression during and only during contract year; you get percentage of top pay. My BA said that I would get 75 percent of top pay since I had gained seniority, which kinda makes since to me. Management said everyone falls under Article 41 of the master. I hope BA is correct but if not: "WHY IS THE LAST 2 PARAGRAPHS EVEN IN THE SUPPLEMENT IF EVERYONE IS UNDER THE MASTER?"