My parents were told by their landlord Tuesday evening that they had to be out by this coming up Monday. They have been faithful about paying the rent and the landlord has no just cause. He hasnt provided any written notice. My question is… Do they have to move? I was under the impression that one has to be provided a 30 day written notice. Can anyone help me?
Your right. Unless your parents have done something againist the lease they are entitled to 30 days written notice
Really depends what is in the lease your parents signed. Normally, landlord gives 30 days. If your parent or you did something that violates the lease agreement, eviction could be immediate.

Look up your state's rental rights to know what recourse you have.