As per the CRA: You are eligible for the Canada workers benefit (CWB) if you:

• earn working income
• are a resident of Canada throughout the year
• are 19 years of age or older on December 31, or you live with your spouse or common-law partner or your child

You are not eligible for the CWB if you:

• are enrolled as a full-time student at a designated educational institution for more than 13 weeks in the year unless, on December 31, you have an eligible dependant
• are confined to a prison or similar institution for a period of at least 90 days during the year
• do not have to pay tax in Canada because you are an officer or servant of another country, such as a diplomat, or you are a family member or employee of that person.

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