The first-class constructor shall pay social security.

1, hello, if the employer can't pay social security for you, then your builder's certificate is invalid, and the builder's certificate and social security are tied together, but the employer doesn't need you to transfer files.

2. Unless you can negotiate with your current employer: ask your current employer to stop paying your old-age insurance (instead of all types of insurance), the new employer can give you old-age insurance (this is conditional: your registration fee must greatly exceed the amount of old-age insurance paid by your current employer). Some provinces have not yet made it compulsory to have only one endowment insurance under the same ID card. But most of them are forced. You can consult the local social security agency.

I hope it helps you.