hey there...mine is expiring in sep '09 too and i had already submitted it and here is the needed things they have mailed me from immigration:
If you want to continue working for the same employer, you will need to get:
a letter from the employer stating that you will continue to be employed on a full-time basis for an additional period of time; and
a copy of a new, or extended, signed employment contract.
As a live-in caregiver, if you continue to work for the same employer, you do not need a new Labour Market Opinion from Human Resources and Social Development Canada. Once you have the necessary documents, you can apply for an extension of your Work Permit through the Case Processing Centre in Vegreville, Alberta. This application is available on our Web site. You can complete the application on-line and print it or print it and fill it out by hand.
Please note that for live-in caregivers working in the province of Quebec, a Certificat d’acceptation du Québec from the Ministère de l’Immigration et des Communautés culturelles is still required, even if you keep working for the same employer.
The Internet links below will provide you with more detailed information:
Description: Application to Change Conditions or Extend Your Stay in Canada as a Worker
Address: http://www.cic.gc.ca/english/information/applications/extend-worker.asp