Thanks, but I am not changing the job. I am working with the employer that filed the employer form and sponsored me, and I will still be working in the same work, same position, same pay rate.Maybe it's better to inquire about this. You're having permit upto 2022 which is best. But, if you're changing the job, then you are supposed to provide closed work permit with your future employer name on it. Also OINP says, a person need to inform the job change (company change) as a mandatory, not the position change, pay rate change. So, they'll issue new WP support document which supports Closed WP from IRCC.