According to the provisions of the Labor Contract Law, employees only need to sign or seal it. As long as the parties concerned sign, the contract will be established. Thumbprinting is not a necessary condition, but fingerprinting and signature have the same legal effect. Some employers require fingerprinting, and this can be handled flexibly based on the needs of the unit. Article 3 of the "Labor Contract Law of the People's Republic of China" When concluding a labor contract, the principles of legality, fairness, equality, voluntariness, consensus through consultation, and good faith shall be followed. A labor contract concluded in accordance with the law is binding, and the employer and the employee shall perform the obligations stipulated in the labor contract. Article 10 To establish a labor relationship, a written labor contract must be concluded. If a labor relationship has been established but a written labor contract has not been concluded at the same time, a written labor contract must be concluded within one month from the date of employment. If the employer and the employee conclude a labor contract before employment, the labor relationship shall be established from the date of employment. Article 36 The employer and the employee may terminate the labor contract if they reach consensus through consultation.