overloaded

I am a nurse in home health who started out in QM in a fairly large organization. I keep getting more and more jobs/duties put on my plate and now I was told I am taking on staff development/no extra pay of course as the position was eliminated, for about 300 employees. We are not automated at all. I was working between 60 to 70 hours per week. I feel I am really getting the shaft. Has anyone else dealt with having to do multiple peoples roles for the same pay? I have already took over the:

4 day per week QM role
the coder full time
the staff development person-4 days per week
the risk management person duties-4 days per week

I am considering going back into the field in home health being paid per visit to at least make appropriate monies and not be salaried

renerian