Simply write down the reasons for applying for social security.

Legal analysis: you don't need to write any reasons to participate in social security, you can apply for insurance as long as you meet the conditions. If you don't buy personal social security, you need to explain the specific reasons, such as: I don't participate in social security for the following reasons: 1. I have learned that the company wants to buy social insurance for employees and issued a notice; Secondly, I also know that if I buy social insurance, I have to deduct 100 yuan from my salary every month. Now I am in financial difficulties and unable to bear part of the social insurance premium; Third, I also know that temporary foreign accounts cannot be transferred out by purchasing social security, and it is difficult to determine the current working area and years; Fourth, know that the procedures for insurance and surrender are cumbersome. Therefore, I hereby apply to the company not to buy social insurance for myself, and I am well aware of the legal consequences. I promise I don't need your company to return or repay it. If the legal consequences and risks arising therefrom are borne by myself voluntarily, it has nothing to do with the company. I hereby promise.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 4 Employers and individuals in People's Republic of China (PRC) shall pay social insurance premiums according to law, and have the right to inquire about payment records and personal rights and interests records, and ask social insurance agencies to provide social insurance consultation and other related services.

Individuals enjoy social insurance benefits according to law and have the right to supervise the payment of their own units.

Article 58 An employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay.

Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration.

The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.