If your application is approved you will be issued a Letter of Introduction. The Letter of Introduction will be sent to you by email. Do not book/pay for any travel to Canada or make commitments to your prospective employer in Canada (if you have one) until you receive your Letter of Introduction. 

The Letter of Introduction is not your work permit -- rather, it identifies you to the port of entry as being eligible to receive a work permit.  As such, you must be sure to present the Letter of Introduction to a port of entry officer when arriving in Canada. The Letter of Introduction will be valid for presentation at a Canadian Port of Entry for one year from the date of issuance.

For example, if you are issued with a LOI on the 1st of March 2008, you would have to enter Canada before March 1, 2009. Upon your entry to Canada, when you present this letter, the Port of Entry Officer has the discretion to grant you up to 24 months on your working holiday work permit. NOTE: work permits may not be issued to exceed the validity of your passport. As such, be sure that your passport is valid beyond the period of time you wish to work in Canada.

The issuance of your Letter of Introduction completes processing of your application at the Canadian Consulate General in Sydney.