Social Security Number Information

Individuals who have secured on-campus employment, PhD fellowships, or off-campus employment with OPT or CPT may be eligible for a Social Security Number (SSN).

All U.S. employers require employees to have an SSN. This unique nine digit identification number is issued by the U.S. government and is necessary for getting paid and paying taxes.

Once you obtain your SSN, you must guard it carefully. The SSN is a permanent ID number. Only share your SSN with individuals or organizations whom you believe are trustworthy and have a valid reason for needing your SSN.

We recommend that international students apply for a SSN at least 12 days after their initial or most recent entry to the United States in their current status.

If you are seeking a letter of denial for the application of a Massachusetts Learner's Permit/Driver's License/State ID, please go to a Social Security Administration office with your immigration documents and  request a denial letter. This can be used in lieu of a SSN for the process of applying for a Learner's Permit or Driver's License.

Obtaining an SSN

To apply for a SSN, please take the following documents:

For On-Campus Employment

For Off-Campus Employment

For All Applicants


Locate your nearest SSA Office using the Social Security Office Locator. According to the Social Security Administration, the Waltham and Cambridge SSA Offices are now open to walk-in appointments. It is no longer necessary to call them first to schedule an appointment or to mail them any documents (unless instructed to). It is not possible to apply for a SSN with an employment start date that is more than 30 days in the future.

If your application is accepted, you will receive a receipt confirming that you have applied for a SSN and your SSN card will arrive in the mail within 2 weeks. Please note that there might be delays in receiving your SSN.

The Waltham SSA Office is located at:

135 Beaver St. Suite 120
Waltham, MA 02452