From Social Security Administration Site
What types of Social Security cards does SSA issue?
Question
What types of Social Security cards does SSA issue?
Answer
We issue three types of Social Security cards depending on an individual's citizen or non-citizen status and whether or not a non-citizen is authorized by the Department of Homeland Security (DHS) to work in the United States.
1. The first type of card shows the individual's name and Social Security number only. This is the card most people have and reflects the fact that the holder can work in the U.S. without restriction. We issue this card to:
- U.S. citizens, or
- Non-citizens who are lawfully admitted to the U.S. for permanent residence, or who have permission from the Department of Homeland Security (DHS) record to work permanently in the U.S., such as refugees, asylees and citizens of Compact of Free Association countries.
2. The second type of card bears, in addition to the individual's name and Social Security number, the legend, "NOT VALID FOR EMPLOYMENT." We issue this card to non-citizens who:
- don't have DHS permission to work, but are receiving a federally-funded benefit; or
- are legally in the U.S. and don't have DHS permission to work but, are subject to a state or local law which requires him or her to provide a SSN to get general assistance benefits or a State driver's license for which all other requirements have been met.
3. The third type of card bears, in addition to the individual's name and Social Security number, the legend, "VALID FOR WORK ONLY WITH INS (or DHS) AUTHORIZATION." We issue this card to people who have DHS permission to work temporarily in the U.S.
If you’re a noncitizen, we must verify your documents with DHS before we issue a SSN card. We will issue the card within two days of receiving verification from DHS. Most of the time, we can quickly verify your documents online with DHS. If DHS can’t verify your documents online, it may take several weeks or up to three months to respond to Social Security's request. For more details, please see the answer to the Frequently Asked Question, How is SSA protecting Social Security numbers?
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check out this link also if you need more information...
http://www.ssa.gov/immigration/immigration2.htm#refugees
Best of luck,
Regards