SMS notified the termination of the labor contract, but no documents were received.

Wait or ask actively. According to our country's law, the notice must reach the other party to take effect. If the notice of termination of the labor contract is not received, it shall be deemed that the fact of termination of the contract has not yet occurred. Therefore, in the face of this situation, workers can have two reactions: waiting for the delivery of the notice and claiming that the delivery date of the notice is the termination date of the labor contract. Ask the unit actively and ask the unit to provide the Notice of Dissolution of Labor Contract.