It is difficult to answer without seeing the contract, but in general, he probably can't terminate your contract legally if you can supply walkers to substitute for you until you return.
There is a shot, and I mean just a shot, at making a discrimination claim stick here, because your position is close to that of an employee. I think that if you want to keep your job throughout that period, you might want to have an attorney send a letter spelling out precisely what days you will be needing off, and setting forth the days you will be available. By any chance do you have a written contract? Would this company be able to pay a judgment, if you obtained one.
If you'd like to discuss, please feel free to call. Jeff Gold Gold, Benes, LLP 1854 Bellmore Ave Bellmore, NY 11710 Telephone -516.512.6333 Email - Jgold@goldbenes.com
You might have a claim under the NYC Human Rights Law, provided certain factors are met. To thoroughly evaluate your situation, and before you stop working, please schedule a consultation with an experienced employment lawyer, ASAP. You have more leverage and ability to resolve the problem while you are still working.
Denise K. Bonnaig