The privately signed industrial injury compensation agreement shall take effect immediately after it is concluded according to law. In the event of a labor accident between an employer and a laborer, the parties may apply for mediation or arbitration according to law, or settle it through consultation. However, if the amount of compensation paid in the agreement is improper, if there is fraud, coercion, taking advantage of others' danger, obviously unfair or improper payment in the conclusion of the agreement, you can apply for labor dispute arbitration or request the people's court to change it. Article 146 of the General Principles of the Civil Law of People's Republic of China (PRC) * * * The civil juristic act carried out by the actor or the counterpart for false intention is invalid. The validity of a concealed civil juristic act with false intention shall be handled in accordance with relevant laws and regulations. Article 490 Where the parties conclude a contract in the form of a contract, the contract is formed when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.