Do I get tax deductions for working from home?

[TurboTaxKim]

How much home expenses you can claim as a deduction depends on whether you are using you home for Business Use or if you are an employee and are using it to earn employment income.

Here's some more information on using your home for Business Use: Run a Business Out of Your Home: What You Can Claim? and CRA - Business-use-of-home expenses 

And from CRA: Employees - Work-space-in-the-home expenses