What are the four major insurances? Why are they deducted from my salary?

This is the deduction item on the statement. Income tax and local income tax can be deducted, and premiums for the National Pension, Health Insurance, and Employment Insurance can be deducted. Rates change every year, so check the rates listed on your statement. The dormitory and meal fee deductions are different. You can only withdraw within the contract amount, and if you want to withdraw in advance, you need written consent, so you need to check the 'Dormitory Fee Deduction' section. To find out if you can receive the National Pension Return lump sum, ask 1355. I can personally check whether I am enrolled in health insurance. Each is located under the 'National Pension Return Lump Sum' and 'Health Insurance' sections.