After the employee applies for the formal signing of the labor contract, the enterprise has the obligation to buy social endowment insurance for the employee, that is, social security, and the social security fee is generally paid according to the average salary of the previous year. The proportion of social security expenses is 28%, 8% of the general employees' contributions are deducted from their wages on a monthly basis, and 20% of the enterprise contributions are deducted from the enterprise expenses on a monthly basis, and they are handed over to the social security center together with the employees' deductions.