That depends on what the lease says, the reason for terminating the tenancy and the laws in the state where the property is located. Tell us more about the situation and we can give you a better answer.

ANY question on law needs to include your general locale as laws vary by area. So you have really not given us enough to provide an answer. Some of the things that would help us answer you are:
a) where the rental is located
b) is there a current lease or is the tenant month to month
c) why is the tenant being asked to vacate, is it due to non payment of rent or some other reason

Please use the Answer options below to provide this information and anything else that might be pertinent so we can help.