how do we inform about change in Job ??? Is it required even if we have submitted all the documents ??IF you are in the same country and city, an address need not be informed, but you can do so, so harm.
1. YEs, you should. You do not have to send any document, just that you are no longer working with the employer. This is because if IRCC decides to verify your employment they should be aware that you no longer work there.
2. See above
3. No, if you submitted your application electronically, all correspondence will be by electronics means.
