I wasn't employed at the time and took a professional development course. Can I claim these expenses?

[TurboTaxNicola]

You can only claim those items, as an employee, if you have a signed T2200 from your employer stating that the expense is a condition of employment.  

If the course is for personal professional development will not be allowed. Please review CRA link below:

https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...