I am a lawyer/practitioner (not in academia) and have a law review article of legal scholarship. The article was originally a joint venture with someone who left and abandoned the project, but did contribute to the overall thesis and drafted maybe 10-20%.
My question is how to deal with authorship. If this were in an scientific field, I think the person would be considered second author. But legal scholarship rarely has multiple authors and anything with a second author typically implies roughly equivalent contributions.
What’s the appropriate level of recognition? My name & their name both? My name only and a footnote recognizing their contributions? My name and their name with an asterix indicating they did less work?
The person in question does not care at all, has left the field, and has given their blessing to take their name off entirely. But I want to do something that feels fair to us both. Thanks for any suggestions!