What should I do to sign up for social security?

Need to provide proof of social security. The construction engineer is registered for the first time, and the "Draft for Comment" puts forward the need to provide "valid proof of employment labor relations signed by the applicant and the employing unit"; If an applicant whose bad behavior is recorded applies for registration again, the "Draft for Comment" emphasizes the requirement of "the original social insurance certificate for the first three months from the date of application". Although the "Exposure Draft" did not put forward specific "social security requirements", in the specific implementation stage, the registration of Jiangxi Erjian 20 18 continued the screening condition of "social security". The regulatory thinking of Erjian's application for "one-card social security" has not changed. Only "social security" is a powerful proof of "effective labor relations", while a simple labor contract is just a dead letter in the eyes of "bad behavior applicants". For registration applicants with "bad behavior", it is clear that they must provide social security certificates for 3 months.