Employee or former employee — Enter the name of the person. Social Security Number — Enter the Social Security Number of the person.Not all forms are listed. When you receive the worker's Social Security number, file Form W-2c (Corrected Wage and Tax Statement), to show the worker's number. It is not illegal for an employer to ask you for your social security number (SSN). HOWEVER you are in no way obligated to provide your SSN. Most online recruiters only ask for the last four digits of your social security account number. You need an SSN to get a job, collect Social Security benefits, and receive certain government services. Your employer will ask for your SSN to report your. 1. US Social Security Card 2.