I heard that in other provinces the officer contacts the Nominee and ask for some docs like proof of address, pay stubs etc. In case of ON, I noticed that there was a portion that I signed allowing them to contact me in the future of some sort. There are also instances that PRs were not renewed after the expiry of 5 years for misrepresentation for not settling to the province that nominated them however these were just hearsays and I never read any first hand post from someone who experienced the same.