The structure of the Workforce Information Database is a product of the Analyst Resource Center Consortium.  The Consortium  periodically reviews the structure of the WID, and makes modifications when they deem it is appropriate to do so.  When modifications occur, a new version of the WID is created. The ARC maintains documentation and provide support for the current and past two versions of the WID.

Below is a listing of Workforce Information Database versions, links to structure documents and their release dates.

Database VersionRelease DateStructure Document
2.8May 2019Open
  Addenda & errataMay 2019Open
2.7May 2017, rev Mar 18Open
  Addenda & errataMarch 2018Open
2.6.1May 2015Open
  Addenda & errataDecember 2015Open
  Revised Load Order DocumentOctober 2016Open
2.6December 2014Open