I work as an instructor at a university. I am not a graduate student there and my responsibilities end at teaching. Recently, a supervisor from another department asked me to prepare an article for their department to use, for some extra pay. The subject aligned well with my background and recent research.
When I finished the article, which involved additional research and several weeks of work, I put my name as author, as I would any other paper. After I finished, the supervisor requested that I completely remove my name, as he wished to submit it to the leader of his department, assembled together with some students' work.
Is that at all unusual that someone would request that I remove my name from a paper?