That depends upon the category of Canadian Immigration under which you are applying. Under the Skilled Worker category of Canadian immigration, your submission should include application forms, a copy of your passport bio-data page, and appropriate Canadian government processing fees in Canadian dollars payable to the Receiver General for Canada. If you are in Canada on a Work Permit and claiming points for Arranged Employment, you must also include a copy of your Work Permit and a letter from your employer indicating that you will be employed indeterminately upon receiving your Canada Immigration (Permanent Resident) Visa or alternatively you should include a photocopy of the Arranged Employment Opinion (AEO) issued by Human Resources and Social Development Canada (ESDC) in relation to a permanent job offer that you have received from a genuine Canadian employer. In addition, all applications must include supporting documents in relation to your civil status, education, work experience and language proficiency (IELTS and/or TEF results) as well as proof of sufficient settlement funds. Proof that you have applied for police clearance certificate(s) should also be included with the initial application.
Under the Family Sponsorship category of Canadian immigration, supporting documents usually include evidence of civil status, the genuine nature of the relationship between the parties and the ability to commit to an undertaking of support.
Under the Provincial Nomination Program of Canadian Immigration or if you are intending to reside in the Province of Quebec, you will have to submit forms and documents as per the province’s specific requirements.
Under the Canadian Experience Class category of Canadian immigration, supporting documents will include proof of your language proficiency (IELTS or CELPIP and/or TEF results), proof of your having worked in Canada and, if applicable, proof of your post-secondary studies in Canada.
Under all categories of Canadian Immigration, Citizenship and Immigration Canada requires Police clearance certificates from all countries that you have resided in for more than six months since your 18th birthday.
Canadian Immigration Visa Offices may, in addition, have specific requirements regarding supporting documentation. It is advisable to seek expert guidance or instructions from the Canadian Immigration Visa Office to which your application will be submitted.