Retrieved from: http://www.cic.gc.ca/english/department/media/notices/canada-post-strike.asp#a3
If your temporary resident status (e.g., as a worker, student or visitor) is about to expire, you should ensure that your application to extend your status is received by CIC before your status expires as shown on your immigration document. If you do this, your period of authorized stay as a temporary resident will be extended by law until a decision is made and you are notified. In this case, you are considered to have implied status as a temporary resident during that time, as long as you stay in Canada.
Note: “Implied status” only applies if your conditions do not change. For example, if you apply to renew your study permit and the permit expires before you receive an answer, you can continue to study in Canada until you receive a decision. If you hold a work permit, you may continue working under the same conditions as your previous work permit while on implied status if you have applied to extend your stay in Canada as a worker.
As a temporary measure, if your status is about to expire during the postal strike and you cannot use online applications or courier services to extend your status as a temporary resident, CIC will grant you an implied status for the length of the strike. In that case, you will be given a one-month grace period after the strike to submit an application to extend your status without having to restore your status.
