Concerns about identity theft prompted a group of nine Union Pacific Corp. employees to sue the nation's largest railroad over its use of Social Security numbers to identify employees.
The Omaha-based company said in May that a computer with names and Social Security numbers of 30,000 current or retired Union Pacific employees had been stolen from a personnel employee April 29.
The lawsuit was filed Friday in Pottawattamie County, Iowa, by the nine railroad employees on behalf of a class that could include 30,000 members, according to the lawsuit.
A Union Pacific spokesman said this week that company attorneys had not yet seen the lawsuit and had no comment.
A company spokeswoman said in May that Union Pacific had notified the 30,000 people affected, paid for their credit monitoring for a year and encouraged them to put fraud alerts on their accounts. The employee violated company policy by transferring work files to a private computer to work on at home, and the private computer was stolen, the spokeswoman said.