Due to COVID-19, this year many employees can deduct home-office expenses. If you require to work from home you have to pay for expenses out of pocket and you did not receive an allowance for them, or the allowance you received is included in your income, then you can ask your employer to sign the From T2200/T2200s for you. This checklist can help you to understand what kind of expenses you can deduct from your income, however, for detailed information, please consult with the CRA website.