anything in the lease that is against
ontario landlord and tenant act, will be override by the landlord and tenant act. landlord and tenant act doesn't apply to the case that landlord and tenant sharing common area (e.g. kitchen, living room etc.) in that case, landlord can kick out a tenant whenever the landlord wants. for other cases, landlord has to go through the formal procedure. if 石头's friend encountered with a so called "
professional tenant", he or she could be in big trouble, much more than "not receiving a few months' of rent".