I worked as a contract researcher with a university-affiliated institute. I ended up doing qualitative analysis and extensive writing for an academic paper. My former supervisor has basically edited and published my work under his name. The papers are different but only in the way that an interim and final draft are different - the structure is the same and some sentences were either paraphrased or identical.
The analysis and final recommendations are also identical, he did not supplement my analysis with his own. Although, the analysis process was a collaborative process, I was the one who did the VAST majority of the writing with him chiming in occasionally about what he did/did not like. The basic distribution of labour was: he conceived of the project, did the interviews, made comments on drafts, performed the final edit and responded to peer review questions. I performed the analysis, performed the literature review and wrote the bulk of the paper.
To boot, I feel like this was a punitive action because at various points after the end of my contract he tried to get me to do various forms of free labour for him which I did not do because it was a substantial amount of work and I was busy working another job. Also, I feel that I should be reimbursed for my time because, quite frankly, I need to pay my rent. I feel that by not including my name on this paper, I am being punished for not being at his beck and call.
I feel that this is extremely unethical, verging on just plain wrong. I am wondering what I can do as this is a research institute setting (not a formal university setting but affiliated) and I was on contract.
What options do I have?