You can work full time while waiting for the result of your Bowp application. This particular period of work while your bowp is being processed is called implied status.
Please note your bowp application will be rejected if you have not attached the aor along with the application. Pnp candidates also have to attach the provincial nominee certificate to their application to avoid rejection.
If your pgwp has expired and you are on implied bowp status and if the bowp is rejected then you will be out of status in canada.
You need to stop working the day you receive the bowp rejection and apply for a visitors visa.
The visitors visa will allow you to stay in canada but you cant work.
Applying for bowp without getting a nomination or ita guarantees rejection.
If you keep working in canada after your pgwp expires and bowp is rejected is a aerious offence .
It could jepordise your pr application and you may be deported.