I’m working on a paper with two colleagues. It all started out with a broad idea that they had. They were coming to me, asking me to do the data analysis (survey data). At the beginning I had the lead authorship and I started to work on it completely on my own and was adding my own ideas to the research design etc. The whole data analysis was very time consuming and I was spending months on it. It all worked out, the results are great and both of them were excited about what I did with the data.
They wanted me to write the draft and finish the paper. At that time though, I was also in the middle of my PhD. I didn’t want to stop the process of the paper. So I decided to give one of them the lead authorship, so that he could finish the paper by writing the rest of the manuscript and I got the 2. authorship. I already wrote the methods and results section of the article.
That was a year ago. However, I’ve finished my PhD now and the paper has still not been written by the lead author. He only wrote a draft of the theory which did not fit the results of my data analysis very well. Therefore, I suggested that I could take over the lead authorship again and finish this paper. Since I already published a very similar paper during my PhD, I was already experienced and knew the underlying theory, state of research etc.
Unfortunately, at first they were ignoring my request and after I asked again, they suggested that the lead authorship should be decided based on how much time/work capacity the person has.
Since the lead author is my boss, he can decide if I should do other work instead. So far, he took the lead of another paper where I did the data analysis and formulated the research questions etc. as well. For this paper as well, I already wrote the methods and result parts and prepared the figures, regression tables etc.
I feel like I’m not treated very fairly. Although they depend on me regarding the research papers, I’m also in a bad position because both of them are above me in the hierarchy. How should I proceed?
Update:
Thank you both for your very helpful response! Your arguments support me in the decision that it's probably best to just let it go to avoid conflict.
I still work with both of them, and there is still pending work from the time when I was still working on my PhD. However, both of them were not my supervisors (my supervisors treated me very fairly and did not insist on co-authorship).
In sociology the author order generally indicates the amount of contribution. The last authorship is often given to someone who is usually the group leader.