Canadian permanent residents have the right to enter and live in Canada. Canadian permanent residents must meet certain residency obligations or they may lose their permanent resident status. Two years of "residency days" must be accumulated in every five-year period. Residency days need not be consecutive and may be accumulated inside or even outside Canada in the following ways:
The calculation of residency days for a person who has been a Canadian permanent resident for more than five years will be limited to the five years immediately preceding the examination. Persons who have been Canadian permanent residents for less than five years must demonstrate that they will be able to meet the residency requirement during the five-year period immediately following their becoming a Canadian permanent resident.
Canadian permanent residents who plan to re-enter Canada by common carrier (plane, train, bus, boat) will have to show their Canadian Permanent Resident Card or Temporary Travel Document before boarding.
Canadian citizenship is voluntary and may be applied for after three (soon to be four) years of residence in Canada.