Believe it or not this did happen and was written in the contract. Just like Stand4afuture said I also was in a union, 2 of them, and like him I also know what they do and don't do.
This was not a geographical location this was union drivers looking out for themselves with no care on the future.
The union was local 639 Washington D.C. and the contract was for the drivers at Giant Food of MD. In that contract when I work there was 2 different parts of hire by dates in which the main focus was on what days were paid as holidays. The one holiday I remember was Good Friday about half the drivers their got 8hrs holiday pay and the day off and if they choose to work they got their OT rate plus the 8hrs holiday pay. For any one else hired after that date it was a standard work day with no holiday pay or OT rate.
In no way did I get a vote. Yes the members of the union did vote on this but like I said they lost nothing and sold the future works down the drain not just once but twice and who know how many time after I was layoff.