It is a legal requirement that all employed persons, including students have a social security number in order to be eligible to work. In order to apply for a Social Security number, you will need to have a valid job offer. You will then need to apply for a Social Security number at the Social Security Office located in the O'Neill Federal Building in downtown Boston (10 Causeway St., Room 148, 1st floor, Boston, MA 02222; phone number: 1-800-772-1213 ). The O'Neill Federal Building is adjacent to North Station on the Green and Orange MBTA subway line.
For students applying for an on-campus job:
When you have an on-campus job offer, please ask your on-campus employer to write a letter indicating your job title, the hours per week and the wage for the job. With this letter in hand, stop by the Dean of Student's office (C-211 MCB) and ask for a "social security letter", which will verify your eligibility for employment to the social security office.
In addition to the letter indicating the job offer and the letter verifying your eligibility, you will also need to bring your passport with the I-94 and Visa, and your I-20 to the Social Security office.
For F-1 students on CPT:
In order to apply for a Social Security number you will need to bring your passport with the I-94, Visa, and your I-20 indicating your CPT authorization.
For students on OPT:
In order to apply for a Social Security number you will need to bring your passport with the I-94 and Visa, your I-20 indicating your OPT authorization and your EAD card.