If the added responsibilities include adding to your skills I'd just go along with it. I'd document everything and how it helped the company. It doesn't feel like it now but the economy will improve which will leave you in a good bargaining position if you decide to stay (ask for a raise) or move on to a place where you can get a good position.
From where I'm sitting this almost looks like an enviable position. I have a full time job but I am not directly managed. I have to get out there on my own to look for projects at work on and through the years I've had problems gaining visibility to get those projects (others in my way, office politics, for example) so in a way I have the opposite problem and trying the best to deal with it.
It is better to be employed and overworked than to be unemployed. Just think of what your experience will look like on a resume when the ecomomy improves!
I am in the exact same boat as you are in...I have been with the company I am working for, for 3 years and keep getting more responsibilities but never get any appreciation for it...no raise, no thank you either. its just expected. I feel your pain. It stinks. Hope things get better for you. sorry i dont have any advise...if you hear any good advice...let me know.
two words. industrial sabotage. make your slave driver suffer, profit if you can.
It depends how long you have been in the job because I don't normaly give my staff all the jobs they are expected to do in the begining I gradually add them as they become more efficient. I am always open to discussing things with my staff and don't mind people coming to me about anything sying that I have worked for people that were not approchable. At the moment across the board we have had a work increase and we are all being expected to do more for less. My advice would be to ask your boss for some time to discuss something and then adress it say how you feel and see where it goes.