Why is the social security card in the street office?

The social security relationship handled by the company belongs to the social security relationship paid by the company, and the expenses are paid by the company (most) and you (a small part). Individuals who handle social security relations in street offices belong to the nature of individual contributions, and all expenses are borne by individuals. If the company and your household registration are in the same city, you don't need to handle another social security relationship yourself when the company has already handled it for you. Please note that the social security relationship paid by the company is related to

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.