WWOOFing is legal in Canada. Foreign nationals volunteering on farms in exchange for room and board for a period of up to four weeks per farm do not require work permits. However, a visitor's visa may be required from certain countries. Please do your research and find out whether you need any kind of visa to enter Canada. We cannot provide advice on this issue - it is up to you to do the research and find out. If you are a citizen of another country, please visit the "Citizenship and Immigration Canada" website to see if you require a visitor visa to enter Canada.