According to CIC website explaining about Foreign Temporary Workers, you can leave Canada and come back subject to any one of three things which could happen when you return to Canada.
* You may be allowed to come back to Canada as a visitor, if Citizenship and Immigration Canada (CIC) has not yet decided to extend your work permit. If this is the case, you cannot work until you get your work permit extension. The officer at the port of entry may ask you to prove you have enough money to support yourself in Canada.
* You may be allowed to come back to Canada as a worker, if the officer at the port of entry finds out that CIC extended your work permit while you were away.
* You may be asked to apply for a new work permit at the port of entry
I called CIC and they said...as long as i come back before expiry of TRV and WP i can re enter as a worker,....in case i leave on implied status (after wp expires and extension in process) then i might be re entered as a visitor until a decision is made...
I still have my doubts as to what the border officer might ask....
