Can you prove three years of work experience with social security for grad school?

Can be proved. According to the search for relevant public information, social security is a common way to prove work experience. If you have more than three years of work experience before the exam and have paid social security during these work experiences, then you can use the social security payment record as a way to prove that you have the relevant work experience. However, if you have had work experience and paid social security during the exam period, then the social security record can only prove that you have had work experience during this period, not the three years of work experience before the exam. You can prove that you have the appropriate work experience through other evidence such as work certificates, contracts, tax certificates, etc. issued by your work unit. In short, the social security payment record is only a way to prove work experience, can not be the only proof of material, the specific proof of the way you need to choose according to their specific circumstances.