Impact of length of program of study in Canada and the length of the work permit:
The maximum length of this work permit is three years; however, your Post-Graduation Work Permit will be based on your length of studies. If the official length of your program of study is:
• Less than eight months: you are not eligible for this program
• Less than two years but more than eight months: you may get a work permit for a period no longer than the length of your program of study (for example, if you studied for nine months, a work permit may be issued for a period of nine months)
• Two years or more: a work permit may be issued for three years
The application guide for the Post-Graduate Work Permit can be found here.