I recently left an full-time academic position in the UK for industry and the department wants me to continue to teach a module I have been in charge of as a visiting lecturer in future.
I do enjoy teaching this module to my students and I also think it's a good for me to keep links to academia this way. However, the visiting lecturer pay is less than 1/30th of my full-time annual salary before I left, while I probably spent 15-20% of my time teaching this module last year. Although I don't do this for the money, I do feel that the contract pay is too low to the point where I don't feel my time and effort in teaching this in my spare time is respected. Also, since there is no one else in the department that can teach this, I think I'm doing a favor by just agreeing to teach in the first place.
In short, while I'm inclined to accept the visiting lecturer position only for maintaining relations and not for the pay, I do feel a bit shocked at how low the pay is. Would you negotiate pay in this situation?