If an employee resigns, he only needs to notify the unit in writing 30 days in advance, and 3 days in advance during the probation period. Employees can go through the resignation formalities directly when they expire, and ask the unit to settle their wages. Don't need any reason. If the unit refuses to pay wages, then employees can apply for labor arbitration to protect their rights.
According to the Labor Contract Law
Article 37 A laborer may terminate the labor contract by giving a written notice to the employing unit 30 days in advance. The employee may terminate the labor contract by notifying the employer three days in advance during the probation period.
Provisional regulations on wage payment
Article 9 If the labor contract is dissolved or terminated by both parties in labor relations according to law, the employing unit shall pay the employee's salary in one lump sum when dissolving or terminating the labor contract.
Eighteenth labor administrative departments at all levels have the right to supervise the payment of wages by employers. If an employing unit commits one of the following acts that infringe upon the legitimate rights and interests of workers, the labor administrative department shall order it to pay wages and economic compensation to the workers, and may order it to pay compensation:
(1) Deducting or delaying the wages of workers without reason;
(2) refusing to pay overtime wages to laborers;
(3) paying workers' wages below the local minimum wage standard.
The standards of economic compensation and compensation shall be implemented in accordance with the relevant provisions of the state.
Article 19 In case of a labor dispute between a laborer and an employer due to the payment of wages, the parties concerned may apply to a labor dispute arbitration institution for arbitration according to law. Anyone who refuses to accept the arbitration award may bring a lawsuit to the people's court.