lindatw wrote:What are Canada's laws regarding such documents?
Well, as far as I know, and anyone who does know for sure and I'm wrong, please correct me, in Canada it is more considered as a person's "wishes". So, if a person has a specific idea of how they wish to be handled by doctors in a medical situation where the outcome is uncertain, it's better to have it all written down than not.
It probably
could be legally contested, I believe, if it came down to a crunch by feuding relatives, etc.
I also believe that a spouse's input at a time of a situation where the other could not make a terminal decision
may be honoured by a doctor.
Like in many jurisdictions, living wills are not written in cement.