What's your citizenship? US? The ONLY visa which could allow you to work for up to one year would be the working holiday visa for young people - called in Canada "International Experience Canada" (IEC). However, there are specific limitations for this visa, starting with eligibility limited to citizens of certain specific countries. Age limitations. You must have sufficient funds for your year of travel in Canada, but are allowed to pick up occasional labor or seasonal jobs to supplement your travel funds, if you can find such jobs.
So, you need to do your homework. Study the regulations for IEC, make sure you meet all of them, save your money (you won't earn enough to pay all your expenses), etc. Application forms, fees, instructions are all online.