The notice of not renewing the contract should be sent to the employees one month before the expiration of the contract. One month before the expiration of the contract, the notice will not be renewed, and economic compensation will be given according to law. Article 46 of the Labor Contract Law of People's Republic of China (PRC) is under any of the following circumstances, the employer shall pay economic compensation to the employee: (1) The employee terminates the labor contract in accordance with the provisions of Article 38 of this Law; (2) The employing unit proposes to terminate the labor contract with the laborer in accordance with the provisions of Article 36 of this Law, and the labor contract is terminated through consultation with the laborer; (3) The employer terminates the labor contract in accordance with the provisions of Article 40 of this Law; (4) The employer terminates the labor contract in accordance with the provisions of the first paragraph of Article 41 of this Law; (5) Terminating a fixed-term labor contract in accordance with the provisions of the first paragraph of Article 44 of this Law, except that the employer maintains or improves the conditions stipulated in the labor contract to renew the labor contract and the employee does not agree to renew it; (6) The labor contract is terminated in accordance with the provisions of Item 4 and Item 5 of Article 44 of this Law; (seven) other circumstances stipulated by laws and administrative regulations.