USCIS issued a public announcement on October 17 to employers who were affected by the shutdown of E-Verify that occurred in the government shutdown of the last few weeks. Essentially, employers registered for E-Verify must verify by November 5 all workers who were missed during the shutdown and must afford workers who were subject to a Tentative Nonconfirmation notice a full opportunity to resolve the TNC. The announcement stated as follows: 

"If an employee had a TNC referred between September 17, 2013 and September 30, 2013 and was not able to resolve the TNC due to the federal government shutdown, add 12 federal business days to the date printed on the ‘Referral Letter’ or ‘Referral Date Confirmation.’ Employees have until this new date to contact the Social Security Administration (SSA) or the Department of Homeland Security (DHS) to resolve their cases. If you have an employee who decided to contest his or her TNC while E-Verify was unavailable, you should now initiate the referral process in E-Verify. Employers may not take any adverse action against an employee because of a TNC."

The full two-page announcement is here.