SSA OIG REPORT FINDS H-1B VISA VIOLATORS

A recent report (September 2001) by the Social Security Administration's (SSA) Office of Inspector General (OIG) reviewed use of a social security number (SSN) by approximately 38,000 H-1B visa holders to whom SSA issued a number.
Based on the results of the OIG's review, they estimated that about 7,131 (18 percent) of the 38,546 H-1B workers to whom SSA assigned an SSN in 2007 may have used their SSNs for purposes other than to work for their approved employer. This estimate includes about 4,433 (11 percent) H-1B workers who had posted wages during their audit period from an employer other than their DHS-approved employer. This estimate also includes about 2,698 (7 percent) H-1B workers who had no posted wages from 2007 through 2009.
The writers of the report recommend that to enhance SSN integrity, SSA should contact DHS to establish a data match agreement to assist DHS’ efforts to identify and reduce the number of H-1B workers who are violating their status or using their SSNs for purposes other than to work for their approved employer.
I am not sure how they conducted these checks and whether they considered change of employer petitions that are very frequent that lead to H-1B portability (the ability to work for the new employer as soon as it files a new H-1B petition) but it's only the beginning of additional scrutiny by DHS of H-1B workers.