WorkRecords takes the data security and privacy of each worker, employer and workplace served very seriously.  The WorkRecords website is a secure website, hosted by Rackspace and covered by an annual SSAE 16 Type II Audit Report by Ernst & Young.  SSAE 16 is the professional standard used for issuing reports in accordance with the American Institute of Certified Public Accountants' Service Organization Control (SOC) reporting framework, which consists of SOC 1 (SSAE 16) along with SOC 2 and SOC 3(AT 101) reporting. The SSAE 16 standard effectively replaced the previous SAS 70 auditing standard.  All data entered at the WorkRecords website and entered at the WorkRecords kiosks is encrypted before transmission to the WorkRecords data center.  No data entered into a WorkRecords kiosk is ever retained or stored on that kiosk.  Please review the current WorkRecords Access Agreement (Section 9e - Data Privacy) for additional information. 
WorkRecords requires employers enter worker Social Security Numbers as part of the data entry for each U.S. worker because, quite simply, there is no alternative unique identifier available.  Because many workers frequently change employers, including leaving a contract labor employer to become employed by the workplace or another staffing supplier, the Social Security Number is the only number that is universal to all. 
WorkRecords does not reveal the entire Social Security Number of a contract worker to the workplace.  However, when needed, WorkRecords will reveal the last four digits of the Social Security Number alongside a worker's name in order to correctly identify two or more workers with the exact same name,