It falls under the Human Rights Code, Duty to Accomodate. Feel free to call your local office with questions, and I'm sure they have a website too. Just google "human rights" and your province and I'm sure you'll find information. Employers have to make an effort to accomodate individuals with disabilities. It's possible that they may not be able to, but they need to go through a significant process of trying and looking at part time work, different role, modified duties or bundled tasks is not unreasonable. I would encourage you to contact the human rights office for more information, employers are not expected to create unproductive jobs, but the burden is quite high for employers to make efforts to accomodate.
I'm glad that you are to the point where you are able to return to work!