Linda,Many people get jobs here in Canada without having official status in Canada. Some companies will sponsor your first work Visa, which usually lasts two years and then it is your responsibility to get Permanent Residency or Landed Immigrant Status within those two years.
In regards to what happens if you don't get a job, please forward this question to David Cohen. David is an Immigration Lawyer and has more expertise in this situation. My specialty is Career and Human Resources issues.
Harry