A contract that violates public policy or a specific statute will not be enforceable in Michigan courts. This one is self-explanatory: The state will not compel anyone to take an action that is against the law.
To Sum it Up: Verbal agreements can be legal in Michigan, but it's always better to have a written contract, especially for important agreements. A written contract provides clear evidence of the terms and reduces the risk of misunderstandings or someone backing out of the agreement.
Per contract law, a contract is only considered to be legally binding if it is mutually beneficial for all parties involved. This is also known as consideration. When one party does something without getting anything in return, the contract is typically considered unenforceable by the courts.