Most professions are unregulated in Ontario. This means you do not need a licence or certification to do them. However, some professions and trades are regulated in Canada to protect public health and safety. That means you must have a licence or certificate to work in these professions and trades. In some occupations it is illegal to work or even use the title of the profession or trade if you are not registered with the regulatory body. In other occupations, you can do the work, but you must register with the regulatory body if you want to use the title of the profession or trade.
In Canada, professions and trades are regulated in each province. There are regulatory bodies (organizations that control licences and certificates) in each province. If you get a licence or certificate, it is valid only for the province you applied for it in. If you move to another province, you have to apply for a licence or certificate again.
Some professions and trades are not regulated by law, but may have voluntary professional bodies. Some voluntary bodies provide certification courses and registration, which may help you to get work. Membership in these bodies is not mandatory.
Some trades in Ontario require you to have a Certificate of Qualification to work. Each trade has different certification requirements. Depending on the trade, you might need to complete an apprenticeship (training), proof of equivalent work experience and/or take a test. You can find out how to get a certificate in a particular trade at your local apprenticeship office. You may be asked to bring specific documentation with you. Ask what is required before your first meeting.
The information listed below was provided by 211 Community Connection.
Visit Settlement.org for more information about regulated and unregulated professions in Ontario:
InMyLanguage.ca has more information about regulated professions and trades available in multiple languages.