I work shift work, as a casual, in health care, Australia. I claimed a day shift, for Saturday. This was over a week ago. One of my co-workers (also casual) claimed the other day shift a few days ago, so we could work together. We ended our Christmas holidays and headed home so I could work the shift. I received a txt message, Friday afternoon telling me that I had to be taken off the shift, as it is a permanents shift, and they have become available again. I contacted my co-worker to see if they were still working the Saturday shift, and they were. So even though I had claimed the shift before my co-worker, we are both casual, I was the one to be taken off the roster, as the permanent worker essentially changed their mind.

Is this allowed? Do I have more rights than this as a casual? I did reply to the txt saying that I ended my holiday early to work this shift, and that this is disappointing.

Should I follow this up, or just drop it and move on?