https://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=1468&top=10
Can I lose my permanent resident status?
Yes, you can lose your permanent resident (PR) status.
If you haven’t been in Canada for at least 730 days during the last five years, you may lose your PR status. See Understand PR Status.
You may also lose your PR status if you:
become a Canadian citizen
give up (renounce) your PR status
become inadmissible to Canada
Permanent residents don’t have the same protections and privileges as Canadian citizens do. If you commit a serious offence as a PR, you may have to leave Canada permanently.
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