http://www.cic.gc.ca/english/information/faq/work/work-faq06.aspWorking temporarily in Canada
Work permits
Can my spouse or common-law partner and dependent children come with me to Canada?
Your spouse or common-law partner and children can come with you to Canada or visit you in Canada, but they must meet all the requirements for temporary residents to Canada: they must satisfy an officer that they will only stay in Canada temporarily, and they may have to prove that they have no criminal record. If your spouse or common-law partner and children need temporary resident visas, they must also meet all the conditions for obtaining those visas.
If you, your spouse or common-law partner and children all apply together, you do not have to fill out a separate application form for each individual: list their names and the other necessary information about them in the appropriate space on your application. If you need more space, attach a separate piece of paper and indicate the number and letter of the question you are answering.
If your spouse or common-law partner and children all apply separately, they must each fill out an application form.
If your family members want to follow you to Canada later, they must each fill out a separate application form.
Important: You may have to provide a marriage certificate and birth certificates for any accompanying family members. If you are in a common-law relationship and your common-law partner will be accompanying you to Canada, you may have to complete the form, Statutory Declaration of Common-Law Union, and provide the evidence listed in it to support your relationship.