According to the inquiry of China Travel Service. The unit shall settle the salary within 30 days after the end of the natural month. More than 30 days constitutes arrears of wages, which is against the provisions of the labor law. The legal basis is Article 50 of the Labor Law, which stipulates that wages should be paid to the workers themselves on a monthly basis in the form of money. The wages of workers shall not be deducted or delayed without reason. Article 91 stipulates that if an employing unit infringes upon the legitimate rights and interests of workers in any of the following circumstances, the labor administrative department shall order it to pay wages and economic compensation to the workers, and may also order it to pay compensation.