Source document: https://docs-lawep.s3.us-east-2.amazonaws.com/1696512176741.pdf (United States)
Apply for your Social Security Number While Applying for Your Work Permit If you currently reside in the United States and plan to apply for work authorization from the Department of Homeland Security (DHS), you will also need a Social Security Number (SSN) to allow employers to report your earnings to the U.S. government To save you a trip to the Social Security Office you can now apply for your SSN and card (SSN card) on the same application form you will use to apply for permission to work legally in the United States (U.S.).
That application is the Department of Homeland Security’s (DHS) U.S.

Citizenship and Immigration Services (USCIS) Form I-765, Application for Employment Authorization.

If USCIS approves your application to work in the U.S. and you completed the section on the application to request an SSN card, then USCIS will send SSA the data we need to issue your SSN card.

If you already have an SSN and you requested an SSN card on the I-765 application, we will issue you a replacement SSN card.
If USCIS approves your application, you will receive two documents – your Employment Authorization Document (EAD), also known as the “USCIS I-766 card” or “work permit”, and in another envelope your SSN card.

We will mail your SSN card to the address you listed on your I-765 application.

You should receive your SSN card no later than 7 business days after you receive your EAD from USCIS.
If You Do Not Receive Your SSN Card that You Requested on Your I-765 – Visit an SSA Office Please call or visit an SSA office if you do not receive your SSN card within 7 business days after receiving your EAD.

Please bring this flyer and your EAD as it may help us answer your questions.

How to Locate an SSA Office To locate an SSA office you may visit our website: https://secure.ssa.gov/ICON/main.jsp, or call our toll-free number 1-800-772-1213 to ask for an SSA office near you.
If You Did Not Request an SSN While Completing Your I-765 – Visit an SSA Office If you did not request an SSN card on your I-765 application, “Application for Employment Authorization”, you must visit a Social Security office to apply for your 1 Social Security number and card after you receive your Employment Authorization Document (Form I-766) from USCIS.
When you visit an SSA office to apply for a Social Security card, please bring the following original documents with you (we do not accept photocopies or notarized documents):  Your Form I-766 to prove your immigration status and that you can work in the U.S.  Your birth certificate to prove your age.

If you do not have a birth certificate or you cannot obtain it in 10 business days, we may accept your foreign passport, U.S. military record, or religious record showing your age or date of birth.
If You Need Help Completing the Social Security Number Application (SS-5) If you need help filling out the SS-5, a Social Security representative will help you.

Timeline for Receiving Your SSN Card If You Visited an SSA Office You should receive your SSN card within 2 weeks after we have everything we need to process your application, including verification of your immigration document with the USCIS.
If we are unable to immediately verify your immigration document with the USCIS, it may take 2 additional weeks to receive your card.

Your Information and Privacy Sections 205(c) and 702 of the Social Security Act authorize SSA to collect information to assign you a Social Security number (SSN) and issue you a Social Security card.

The information you furnish is voluntary.

However, failure to provide the requested information may prevent us from issuing you an SSN and Social Security card.
The information you provide us is confidential.

This means that we do not share your information except as permitted under the law.

For example, we may share information with other government agencies as allowed by the Privacy Act.

SSA will maintain the information used to assign you an SSN and issue you a Social Security card in SSA's system of records Master Files of Social Security Number (SSN) Holders and SSN Applications, 60-0058.
Complete lists of approved routine uses for the information used to assign you an SSN and issue you a Social Security card are available in the System of Records Notice 60-0058, available at http://www.ssa.gov.

For more information about this, please contact us.

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