I work for an airline, as contract tech crew, flying internationally.
My contract over the last couple of years included a clause requiring rosters to be published 14 days in advance, and 'change of base' notifications to be out 10 days ahead of time.
The company rostering people couldn't keep up/remember to do these things, or simply couldn't be bothered and tried to intimidate us into doing it anyway, and were forced to pay a small allowance to us, via our crewing agent, who was not happy with paying us the extra either, as they had to justify it to the company.
Then they fixed the problem, they deleted the clause from the new contracts.
Now they just simply do what they like!
Now I normally say 'Cheers' - but I won't!