Generally, unsigned labor contracts are not bound by law. If both parties fail to sign or seal for some reason, as long as both parties perform their respective obligations according to the contents of the labor contract, it is not a big problem and is also legally bound, but it is recommended to sign as soon as possible.
Legal objectivity:
Article 16 of the Labor Law is an agreement between laborers and employers to establish labor relations and clarify the rights and obligations of both parties. To establish labor relations, a labor contract shall be concluded.