They need your SSN so they can deduct your salary as a business expense. They probably should have gotten it at the start but they are entitled to it.
I am a former federal and State prosecutor and now handle criminal defense and personal injury/civil rights cases. Feel free to check out my web site and contact me at (212) 577-9797 or via email at Eric@RothsteinLawNY.com. I was named to the Super Lawyers list as one of the top attorneys in New York for 2012. No more than 5 percent of the lawyers in the state are selected by Super Lawyers. The above answer is for informational purposes only and not meant as legal advice.
If you do not give your social security number to the company, the company will be required to withhold federal tax at the backup withholding rate of 28%.
It's better practice to have the company issue you a 1099 to avoid any inquiry from the IRS.
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