I'm worried my former collaborators are going to publish without including me as an author. What should I do? I have worked for a project of a Ex-Postdoc, as I was promised an authorship. I was told “You will be a major author”.  I did almost all the labor job as postdoc was my cosupervisor too. I trusted the person.
This was while ago and I had inquire PI few times how is the current status of the project. I got told they are preparing a manuscript several times about a year.
Now I sense manuscript is about to submit and I have not heard back. I need the promised authorship.
After reading an answer from SE politely refusing authorship opportunity?
As they can publish without giving credit to me, I am worried thinking what can I do if they it publish bypassing me. As a international student I do not think I have any support around.
Could it be possible to write to the editor of the journal then?
I would contact the PI/supervisor and say that you are aware that the publication is still in preparation and that you expect to be a co-author of it. But you should also offer to continue to participate in the development in whatever way is appropriate.
You should, at least, have an opportunity to proof the paper before submission.