I am employed as a visiting nurse in ontario canada. What can i claim for tax deductions?

If you have been employed as an employee then your options for deducting are limited. You would have to get a form from your employer detailing what you were responsible for. This form is called T2200 conditions of employment.

If you created your own business and were providing services on a contract, a number of deductions open up: office expenses, supplies, motor vehicle.

Siringes and the morphine.

siringes and the morphine

If you cannot be claimed as a dependent by him, or anyone else, then you can claim the deduction. If anyone can claim you as a dependent, then you cannot claim the deduction. Do not worry about "fair" or "just". You are not allowed to pay the fair or just amount of taxes. You have to do what is legal. Even if this deduction is not fair or just, there is some other thing that you are unfairly or unjustly prevented from deducting, so it evens out in the end.

Your agency should have already told you that. Ask them, they are great with knowing all of the in's and out's.