Your question is ambiguous. Like the others said call the CRA first. Here are a few ideas I can share:
If you are eligible for the Disability Tax Credit (DTC) you may consider Line 215 or Line 330 as a medical expense
You did say "working for me" so it sounds like this person should be issued a T4 or at least show some income on Line 104. If that's the case, if you own a business you can deduct what you are paying this person on the T2125 Line 9060.
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