I work in a profession where it is expected that you will work additional hours where necessary to get the job done. I manage a small team but have always done this part time (my choice for childcare etc). Contracted hours have increased over the years from less than 50% to 80%. A full time member of staff has left and I have absorbed their workload as there is no one else available to do this. I am working much more than full time and my supervisor knows this and I have put a plan to her requesting full time hours for myself, an additional junior member of staff and promotion of another - this will absorb the saving made from the salary of the more quite junior staff member who has left (replacing like for like would take a long time as the area is quite niche).
I have requested to be paid full time since the member of staff left (ignored) but now been told that I should be able to do this in my contracted hours. I'm deflated and feel like just telling them to stuff their job - let them find some other mug and see how much work they can get out of my replacement. Finding a replacement for me would I imagine be difficult and market rates would mean they would definitely cost them more than they pay me. If I handed in my resignation they would be stuffed in the short term. BUT I like the firm I work for and having worked their for several years I don't really want to leave. I don't know what to do - would it be constructive dismissal?