When I was working in my hometown, the unit dealt with leaving my job without pay. What if social security hasn't been paid since?

If the unit has paid the social security fund when working in the hometown, but failed to pay the social security fund after leaving the job without pay, and the accumulated payment of the social security fund is less than 15 years, it can pay the social security fund 15 years when retiring before the statutory retirement age, so as to go through the retirement procedures and receive the pension. According to the second paragraph of Article 16 of People's Republic of China (PRC) Social Insurance Law.